A scientist makes a discovery that suggests a hominid species created and used relatively sophisticated tools. The scientist decided to publish his findings. Which of the following sources would be regarded as the most reliable?

Answers

Answer 1
a journal reviewed by peers
Answer 2

Answer: The answer is A Journal Reviewed By Peers

Explanation:


Related Questions

which of these is a cash crop

A. cucumbers

b. grass

c. latex

d. strawberries ​

Answers

Answer:

The answer is Cccc Latex

the answer is bbbbb grass

What might happen to the genes that break down carbohydrates when cats eat lipids and fats, but no carbohydrates?

Answers

Answer:

Goes into resting position.

Explanation:

The genes become dormant or in resting position that break down carbohydrates when cats eat lipids and fats, but no carbohydrates because of no use of that genes. The genes can't give instructions to the hormones that produces enzymes which take part in the digestion of carbohydrates so due to no need for the genes of carbohydrates, the genes goes into resting position until carbohydrate is eaten by the cat.

How do plants use carbon dioxide? A. To build proteins. B. They store it as fuel in limestone deposits. C. To produce sugars. D. They release it as waste.

Answers

Answer:

C) To produce sugars

Explanation:

Through photosynthesis, plants convert carbon dioxide and water into sugar.

Have a nice day!

An example of mitosis at work is a leaf
a. turning yellow.
b. growing.
c. taking in carbon dioxide.
d. performing photosynthesis.

Answers

Answer:

The answer is B, Growing

Explanation:

Mitosis is the process of dividing a cell and its nucleus into two cells which each have their own nucleus. An example of mitosis is the way the skin cells covering a child's body all multiply while they are growing.

Compose a hypothesis for each of the following questions.
Will planting seeds
too shallow or too
deep prevent their
growth?

Answers

Answer:

No

Explanation:

it doesn't prevents their growth only if they get the necessary source

Question 3 (Multiple Choice Worth 2 points)
(01.03 MC)
Why is it difficult to get people to follow regulations protecting a common?
O People care more about money than the welfare of others.
O Breaking these regulations does not come with direct penalties.
The rules are too strict and prevent meeting basic needs.
O Common area resources belong to everyone.

Answers

I'm sorry for being too late but the answer is, Breaking these regulations does not come with direct penalties.

A scientist is examining the function of macromolecules in a cell. She notices that movement of large molecules into and out of the cell is disrupted when she damages one specific type of macromolecule.

Answers

Answer:

 She notices that movement of large molecules into and out of the cell is ... and out of the cell is disrupted when she damages one specific type of macromolecule. ... The macromolecule which has she most likely damaged would be a protein.

3. Which term describes the offspring of a
first-generation cross between parents with
different forms of a trait? sc.7.L.16.1

Answers

Answer:

the passed on from to offspring

Is plasma membrane and cell coat the same?

Answers

No they are not the same, plasma membrane and cell coat are different

Synaptic facilitation, a form of short-term plasticity, is primarily due to ______________. A. insertion of AMPA receptors into the post-synaptic membrane B. depletion of the releasable pool of vesicles C. prolonged elevation of presynaptic calcium levels following synaptic activity D. changes in Na channels located on the post-synaptic membrane

Answers

Answer:

The correct answer is - C. prolonged elevation of presynaptic calcium levels following synaptic activity.

Explanation:

Synaptic facilitation is a process of short-term plasticity that transiently increases synaptic transmission for less than a second, which is considered an essential part of playing a critical role in information transfer and neural processing.

It is evident that such an increase in the synaptic transmission is occur due to prolonged elevation of presynaptic calcium levels following synaptic activity.

what substance acts to prevent sudden pH changes in bodily fluids?

Answers

Answer:

buffer

Explanation:

because it protects large changes in pH

A buffer is the substance that prevents rapid or large swings in pH. There are two types of buffers; acidic buffers and basic buffers.

Cellular respiration is a mirror image of photosynthesis, meaning that the chemical reaction is the reverse. Below is the chemical reaction for photosynthesis.
Which of the following would be the correct chemical reaction for cellular respiration?
6 CO2 + 6 H2O → C6H12O6 + 6 O2

A. 6 CO2 + 6 H2O → C6H12O6 + 6 O2
B. 6 CO2 + 6 H2O → 6 CO2 + 6 H2O
C. C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
D. C6H12O6 + 6 O2 → C6H12O6 + 6 O2

Answers

Its (C) cz....

Connecting Cellular Respiration and PhotosynthesisThe products of one process are the reactants of the other. Notice that the equation for cellular respiration is the direct opposite of photosynthesis: Cellular Respiration: C6H12O6 + 6O2 → 6CO2 + 6H2O.

hope it helps you, I tried my best to give an ans to you .

And if your kind enough would you mind marking me as branliest plz plz

The chemical reaction for cellular respiration will be C6H12O6 + 6 O2 → 6 CO2 + 6 H2O, the correct option is C.

What is cellular respiration?

Cellular respiration is a succession of chemical reactions that break down glucose to produce ATP, which can then be used as energy to power a variety of reactions throughout the body.

Cellular respiration consists of three major steps: glycolysis, the citric acid cycle, and oxidative phosphorylation.

It is mirror image of photosynthesis, its chemical reaction is:

[tex]C_{6} H_{12}O_{6} + 6 O_{2}--------- > 6CO_{2}+6O_{2}[/tex]

Thus, the correct option is C.

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Which is a diagram that shows the flow of energy among different trophic levels? O A. Energy pyramid O B. Food chain O C. Solar energy O D. Food web​

Answers

Answer:

A

Explanation:

an energy pyramid shows the flow of energy in the different trophic levels.

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How does Inquiry differ from the Scientific Method?
A. The Inquiry process does not use hypotheses, while the Scientific Method does.
B. Inquiry is more open ended, while the Scientific Method is more linear.
C. There is no difference, they are the same thing.
D. Inquiry is more linear, while the Scientific Method is more open ended.

Answers

Answer:

B. Inquiry is more open ended, while the Scientific Method is more linear.

Explanation:

Scientific investigations involve asking questions and providing answer to them. Scientists use data from observations to proffer solutions to problems. Scientific inquiry and scientific method are used in this regard, however, they are not the same.

One of the notable differences between the scientific inquiry and method is that:

- Scientific method is a step by step, linear structured way of solving problems whereas scientific inquiry does not follow a linear pattern. In other words, inquiry is more open ended, while the scientific method is more linear.

Answer:

B. Inquiry is more open ended, while the Scientific Method is more linear.

Explanation:

VR of wheel and axle is 5.what does it mean. plz help me this question I will Mark u as brainliest​

Answers

Explanation:

VR is 5 means that the load moved is five times the effort applied and the distance moved by the effort is five times the distance moved by the load at the same time interval.

I hope it helps you

Answer:

The mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle

Which of the following tissues is used in the formation of flowering plant organs?

1. Connective tissues
2. Vascular tissues
3. Epithelial tissues
4. Nervous tissues

Answers

I think the correct answer is 2. Vascular tissues .

Vascular tissues are the ones used in the formation of flowering plant organs. The correct option is 2.

What are vascular tissues?

Vascular tissue is a complicated conducting tissue found in vascular plants that is made up of multiple cell types.

The xylem and phloem are the primary components of vascular tissue. Internally, these two tissues transport fluid and nutrients.

These tissues also help in the formation of flowering plants.

Thus, the correct option is 2.

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Carry out a tri-hybrid cross between XX(tall) YY(fat) ZZ(fair) and xx(short) yy(slim) zz(black). Find their genotypic and phenotypic ratios.

Answers

Answer:

Genotypic ratio = 100% XxYyZz

Phenotypic ratio = 100% tall, fat, fair.

Explanation:

For a trihybrid cross involving the genes XX which codes for tallness, YY which codes for fatness, and ZZ which codes for fairness with their alternate forms being xx, yy, and zz respectively; each gene will segregate into their respective alleles and combine to form gametes during meiosis, such that:

XXYYZZ ----> XYZ, XYZ, XYZ, XYZ, XYZ, XYZ, XYZ, XYZ

xxyyzz -----> xyz, xyz, xyz, xyz, xyz, xyz, xyz, xyz

These gametes then combine randomly during fertilization to give all XxYyZz offspring.

                XYZ    x    xyz

                       XxYyZz

Since X is dominant over x, Y is dominant over y, and Z is dominant over z, then XxYyZz individuals that are produced from the cross would be tall, fat, and fair. Hence

Genotypic ratio = 100% XxYyZz

Phenotypic ratio = 100% tall, fat, fair.

See the attached image from the Punnet's square analysis.

Question 16 of 30
John is testing the effect of temperature on the solubility of sugar in water.
He plans to determine the mass of sugar dissolved in a saturated solution.
He will begin with a known mass of sugar and add sugar to water until the
solution is saturated. He will then calculate how much sugar dissolved by
subtracting the remaining mass from the initial mass.
He organized data about his experiment in the following table:
Group A
Group B
Group C
Volume of water
100 mL
Temperature
25°C
1000 g
Initial mass of
sugar
800 g
Final mass of
sugar
Which factor should be the same in all three groups?

Answers

Answer:

As John is testing the effect of temperature on the solubility of sugar in water. To test this, he will measure the amount of sugar dissolved at different temperature level.

Explanation:

I hope it's helpful for you ☺️

The volume of water should be the same in all three groups.

What is solubility?

Solubility is the property of a substance to dissolve in a solvent to form a homogeneous solution at a particular temperature and pressure.The volume of water should be the same in all three groups. This is because the experiment is testing the effect of temperature on the solubility of sugar in water, and any variation in the volume of water could affect the results.

By keeping the volume of water constant, John can ensure that any changes in the amount of sugar dissolved are solely due to changes in temperature and not changes in the amount of water. Therefore, he can compare the results of each group and draw conclusions about the effect of temperature on the solubility of sugar.

Learn more about solubility, here:

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Refer to Animation: Filtration, Reabsorption, Secretion. Cells of the excretory tubule _________water by osmosis, from which we can conclude that the solute concentration in these cells must be _________ than in the filtrate. reabsorb; lower excrete; higher reabsorb; higher excrete; lower 2. Refer to Animation: Filtration, Reabsorption, Secretion. What drives the reabsorption that occurs in animal excretory systems

Answers

Answer:

Reabsorption,  Higher

Explanation:

What drives the reabsorption to take place in the executory system is the presence of slow diffusion of some substances and active transport for others. Filtration removes the water form the blood and other substances get dissolved into blood.

Which two phrases describe the nature of the gravitational force?

Answers

Answer:

a force that pulls objects toward each other

Answer:

B

Explanation:

A sonar pulse has a wavelength of 3.2 cm and a speed of 1,500 m/s in water. What is the frequency of the pulse? (

Answers

Explanation:

The universal wave equation states that the velocity of a wave is the product of its wavelength and its frequency.

Mathematically speaking,

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

a

a

v

=

λ

f

a

a

−−−−−−−−−−−

where

−−−−−

:

v

=

velocity of wave (metres per second)

λ

=

wavelength (metres)

f

=

frequency (hertz or reciprocal seconds)

Step 1

Convert the given wavelength from centimetres into metres.

3.0

i

c

m

×

m

100

i

c

m

=

3.0

c

m

×

m

100

c

m

=

0.030

i

m

Step 2

Rearrange for frequency,

f

, in the universal wave equation.

v

=

λ

f

Becomes,

f

=

v

λ

Step 3

Substitute your known values to solve for the frequency of the pulse.

f

=

1500

i

m

s

0.030

i

m

f

=

50000

i

H

z

Rounding off the value to two significant figures,

f

=

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

a

a

5.0

×

10

4

i

H

z

a

a

−−−−−−−−−−−−−−−−

The frequency of the pulse is 4.6×[tex]10^4[/tex], when the wavelength of the sonar pulse is 3.2cm. and has a speed of 1,500 m/s in water.

What do you mean by Sonar?

The sonar may be defined as a device that is used to find the distance, direction, and speed of underwater objects like water hills, valleys, icebergs, submarines, sunken ships, etc.

The universal wave equation states that the velocity of a wave is equal to the products of its wavelength and frequency.

   v = λf

∴ f = v/λ

1500/0.032 = 46,875 Hz.

f = 4.6×[tex]10^4[/tex] Hz.

Therefore, the frequency of the pulse is 4.6×[tex]10^4[/tex], when the wavelength of the sonar pulse is 3.2cm. and has a speed of 1,500 m/s in water.

To learn more about Sonar, refer to the link:

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.What do you think is the most unusual type of protist or the most unusual
Feature of protists? Why?

Answers

Answer:

Saprolegnia, type of water mold

I have earned about 20 points that aren't been added why​

Answers

Answer:

I am not sure-

Explanation:

I mean you should refresh the page or smth unless the question was deleted

Hope it helps c:

All of the following are evidence for the big bang except: A. Cosmic background radiation B. Almost all galaxies are red-shifted C. The sound from the bang echoes though the universe D. The universe is expanding

Answers

Answer: C. The sound from the bang echoes though the universe

Explanation:

Cosmic background radiation proves the big bang because it shows that as a result of the big bang, the early universe was really hot but cooled as it expanded. Cosmic background radiation is the result of that earlier heat.

Galaxies being red-shifted means that the space between galaxies is increasing which means that the universe is expanding which provides evidence for a big bang because particles move away the single point they are concentrated in.

There was no actual bang from the big bang and sound cannot echo through space so c is incorrect.

what is a photon. A. part of a ribosome B. A light particle C. A carbon dioxide molecule D. Part of a chloroplast

Answers

B. A light particle because it is the basic unit of all light. It is a quantum of energy with a visible wavelength

what formed the alps mountains

Answers

Answer:

The Alps arose as a result of the collision of the African and European tectonic plates, in which the western part of the Tethys Ocean, that was formerly in between these continents, disappeared.

Answer:

The mountains were formed over tens of millions of years as the African and Eurasian tectonic plates collided. Extreme shortening caused by the event resulted in marine sedimentary rocks rising by thrusting and folding into high mountain peaks such as Mont Blanc and the Matterhorn.

Explanation:

What type of galaxy is the Milky Way pictured to the right? A. Irregular B. Elliptical C. Supernova D. Spiral

Answers

Answer:

D. spiral

Explanation:

Answer:

Spiral

Hope this helps ! <3

what are the 4 pairs of DNA bases that form in the double helix?​

Answers

Answer:

Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by bonds between the bases, adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.

Answer:

Double Helix

Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by bonds between the bases, adenine forming a base pair with thymine, and cytosine forming a base pair with guanine..

Which of the following is a scientific observation about the panther pictured
below?
Florida Panther
O A. The panther is enjoying the warmth of the sun.
B. The fur on the panther's head is darker than the fur on its body.
C. The panther's coloring is for camouflage.
O D. The panther is an important American symbol.

Answers

Answer:

D, The panther is an important American symbol

pls mark me

Answer:

d

Explanation:

learn and observe air resistance by throwing objects from considerable height a; tissue paper b: plastic spoon c: stainless steel spoon take a record of your findings and observations and jot them down.

Answers

Answer:

Speed: Tissue fell slowest(lowest mass and large surface area acts as parachute)

Plastic spoon fell pretty quick

And the stainless steel spoon fell the fastest because of the weight and small mass

The tissue is the only item out of the 3 that makes 0 noise when it hits a surface.

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Polygon ABCD is plotted on a coordinate plane and then rotated 90 clockwise about point C to form polygon ABCD. Match each vertex of polygon ABCD to its coordinates. What was the Aztec Empire?A. Empire in South American founded by Simon BolivarB. Empire that existed in the 1500s in North AmericaC. Powerful empire in modern day MexicoD. Empire in China that constructed the Forbidden City . Find the word which has different sound in the part underlined.1. A. stopped B. agreed C. listened D. cleaned2. A. meat B. seat C. great D. mean3. A. call B. land C. fall D. ball4. A. rather B. them C. neither D. think me ayudan porfa hacer una introduccin no verbal de la pintura Pls answer if you only know the correct answer! Thanks! :)) In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 55.4 inches, and standard deviation of 4.1 inches.A) What is the probability that a randomly chosen child has a height of less than 61.25 inches?Answer= (Round your answer to 4 decimal places.)B) What is the probability that a randomly chosen child has a height of more than 46.5 inches?Answer= (Round your answer to 4 decimal places.) Cul es el pas hispanohablante de Sudamrica msgrande?_____ es el pas hispanohablante ms grande. Write a letter to your village friend describing about the importance of Internet in our life. A manufacturer of industrial solvent guarantees its customers that each drum of solvent they ship out contains at least 100 lbs of solvent. Suppose the amount of solvent in each drum is normally distributed with a mean of 101.8 pounds and a standard deviation of 3.76 pounds.Required:a. What is the probability that a drum meets the guarantee? Give your answer to four decimal places.b. What would the standard deviation need to be so that the probability a drum meets the guarantee is 0.99? I got on a train.I wanted to go a station. The train didn't stop there. La tasa de m0rtalidad por c0vid-19 en el departamento de Guair en los meses de abril y mayo en ParaguayComo se hace :( ? why do conspiracy theorist believe the assassination of John F Kennedy is not as it seems? Three chains, each 14 feet in length, arelinked end to end. Two longer chains ofequal length are added to make a totallength of 100 feet. What is the length ofone of the longer chains?A. 29 ftB. 36 ftC. 42 ftD. 58 ftE. 72 ft If 56 grams of carbon monoxide burns in oxygen to produce 88 grams of carbon dioxide, the mass of oxygen involved in the reaction is grams. Write a quadratic equation having the given numbers as solutions. -7 and -5The quadratic equation is ___ =0. inveres laplace transform (3s-14)/s^2-4s+8 write a conversation on my school flower in nepali Can anyone please help? Any number that CAN be divided by 2 without having remainder is considered an _______ number write fade in shorthand