Answer:
a. A trace fossil is a fossil created from the
remnants of a dead organism.
Explanation:
All of the aforementioned statements regarding fossils are true except: B. Amber-preserved fossils are the most common form of fossils and are actually the least helpful in studying organisms.
What is a fossil?A fossil refers to the mineral impression or remains of both living and non-living organisms that are generally considered to be prehistoric in nature.
This ultimately implies that, fossils are obtained from ancient organisms such as H-o-m-o Erectus, which is an organism that could walk on two (2) feet like humans.
However, amber-preserved fossils are actually very helpful in studying organisms that are generally considered to be prehistoric in nature.
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How much of the Earth’s water is usable as a freshwater resource? a. 75% b. 3% c. 100% d. 25%
Answer:
B nearly percent
Explanation:
I had the quiz
can someone help me identify this? plss i need this for a grade
What are the characteristics of a Prokaryotic Cell?
A:Single Cell organisms that include the domains Bacteria and Archaea.
B:Multicellular organisms that include the domains Bacteria and Archaea.
C:Single Cell organisms that include the domain Eukarya.
D:Multicellular organisms that include the domain Eukarya.
Answer:
A
Explanation:
Which statement is true of both mitosis and meiosis?
Both are involved in asexual reproduction.
DNA replication occurs before the division of the nucleus.
Both occur only in reproductive cells
The number of chromosomes is reduced by half.
Answer:
Well I believe mitosis is the reproduction of 2 cells, while meiosis is 4 cells
1
Place the following events in sequence:
A) Food enters your large intestines
B) Food enters your small intestines
C) Food enters your esophagus
D)Food enters your mouth
E) Food enters your stomach
Answer:
D; C; E; B; A
Explanation:
The mouth is the first part of the gut (gastrointestinal tract). When we eat, food passes down the gullet (oesophagus), into the stomach, and then into the small intestine. The small intestine has three sections - the duodenum, jejunum and ileum.
Write two differences between the unicellular and multicellular organisms.
Explanation:
Unicellular organisms contain one cell and all of their functions are based on that one cell whereas multicellular organisms contain more than one cell and there functions are divided amongst different cells like nervous cells, cardiac muscle cells etc..
Unicellular organisms are composed of a single cellMulticellular organisms are composed of more than one cellSimple body organizationComplex body organizationA single cell carries out all necessary life processesMultiple cells perform different functionsThe total cell body is exposed to the environmentOnly the outer cells are exposed to the environmentDivision of labour is at the organelle levelDivision of labour is at cellular, tissue, organs and organ system levelIncludes both eukaryotes and prokaryotesIncludes only eukaryotes
what do u mean by sporangium
Answer:
A sporangium (plural: sporangia) is the capsule structure belonging to many plants and fungi, in which the reproductive spores are produced and stored. ... The majority of sporangia produce haploid spores through meiosis, although some are able to produce spores through mitosis.
Found this on google, hope it helps, have a great day/night and stay safe!
Fecal coliform is an indicator of what type of disease?
Answer:
Explanation:
Some waterborne pathogenic diseases include typhoid fever, viral and bacterial gastroenteritis and hepatitis A. The presence of fecal contamination is an indicator that a potential health risk exists for individuals exposed to this water.
Answer:
Thermotolerant coliform bacteria (commonly referred as fecal coliforms) are the group most frequently used as indicators of fecal pollution because they behave in a similar way to most pathogenic bacteria in the environment, and, during treatment, they are abundant and easy to determine.
2. Imagine you have a short, thin stalk of wheat and a tall, full stalk. From
which would you take the seeds and plant a new crop.
the full stalk of crop should be it.
Do snails have brains?
Answer:
I am pretty sure that snails don't have brains. Correct me if I am wrong
Explanation:
What tree things cause abrasion
What is the “self”? When we say “myself” or “yourself” what are we referring to?
Answer:
when you say self you are to the body, so when you say myself you are basically saying my body, my awereness. And when you say yourself it means their body.
Explanation:
Answer:
yourself is said to another person and you say yourself mean you and my self also means you but not used the same way.
Explanation:
hope this helps.
Glad to help
The graph below shows the growth of a population of rabbits in a forest ecosystem. Which environmental factor could have caused the change indicated by "A" on the graph? Rabbit Population in a Specific Ecosystem B Population Size AA- C с A Time o increased availability of food increased predation by herbivores o increased number of decomposers O increased competition among carnivores
Answer:
Increased avaliability of food
Explanation:
I need help can someone plss help? It would mean alot
Answer: D Endoplasmic reticulum (ER)
Explanation: It moves proteins throughout the cell
Hurry 25 Points, will give branliest if correct!! In a chemical reaction,______ are the substances present after the reaction.
Answer: products
Explanation:
The substances bfore the chemical reaction are actually called reactants. Substances that are there after the chemical reaction are products. Hope this helps!
Answer:reactants
Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.
Explanation:
QUESTION 9
if a woman who is a carrier for Fragilex syndrome (an X-linked disorder) has children with a man who does not have the disorder, what chance do their
daughters have of being carriers of Fraglese
None
50%
25%
100%
Answer:
Daughters who are descendants of a woman carrier of Fragile X Syndrome and a healthy man will have a 50% chance of having or being carriers of the syndrome.
Explanation:
Fragile X syndrome has an autosomal dominant inheritance pattern, linked to the X chromosome. That is, someone with an altered X chromosome can either be a carrier or have the syndrome.
In this case, the mother is a carrier of the altered chromosome (X) while the father is neither a carrier nor has the condition (XY).
Cross X x XY
Alleles X Y
[tex]X^{f}[/tex] [tex]X^{f}[/tex]X [tex]X^{f}[/tex]Y
X XX XY
The couple has a 50% chance of having daughters, and of those daughters half (50%) have the chance of having an Xf chromosome, and being a carrier or suffering from the syndrome.
which blood vessel has the highest concentration of glucose
Answer:
The mesenteric veins and the hepatic portal vein mate
what tool is most likely used to observe salt crystals
microscope
unaided eye
pan balance
telescope
Microscope where “micro” means small and scope is like a tool to see thing and salt crystals are small so be choice is microscope
what are the different parts of microscope ?A microscope is which produces large images of tiny substance and provide observer a close view of minute structures at a convenient scale for examination and analysis.
Anatomically the microscope consist of three structural parts, i.e. head, base, and arm, where head is known as the body and it carries the optical parts in the upper part of the microscope.
Base of microscope is used to support and carries microscopic illuminators and Arms connect the base and the head and the eyepiece tube to the microscope base.
The optical parts are basically applied for the view, magnify, and production of an image from a specimen placed and the various parts.
Eyepiece or ocular located at the top of the microscope with standard magnification is 10X, Eyepiece Tube which carries the eyepiece just above the objective lens.
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benefits and drawbacks of synthetic food products?
Answer:
First We're going to look at the benefits of synthetic food products
To make food Taste better.To improve the nutritional composition of a product (Increase the vitamin content by adding ascorbic acid.To maintain the nutrient Composition of the food and to keep it saafe to eat.Explanation:
Now we're going to look at the drawbacks of Synthetic food products
Artificial food colors can cause intestinal upset and breathing problems.Pls help i dont understand :( will give Brainliest + 25 points!!
Answer:
a or b
Explanation:
sorry cant really classify it brainlest on the effort tho?
Study the picture above. Describe what is happening
Answer:
Distinguish between intracellular and extracellular fluids ... ions against their concentration gradients to maintain the cytosol fluid composition of the ions
Explanation:
The force that pulls falling objects toward earth is called
Answer:
The answer is gravity: an invisible force that pulls objects toward each other. Earth's gravity is what keeps you on the ground and what makes things fall. An animation of gravity at work. Albert Einstein described gravity as a curve in space that wraps around an object—such as a star or a planet.
ANSWER ASAP! A cell is put into a liquid and remains its original size. What is the best conclusion that can be drawn from this observation?
-The concentration of water is higher in the cell than in the liquid, so water is leaving the cell.
-The concentration of water is higher in the cell than in the liquid, so water is moving in and out of the cell at the same rate.
-The concentration of water in the cell is the same as in the liquid, so water is moving in and out of the cell at the same rate.
-The concentration of water in the cell is the same as in the liquid, so water is leaving the cell.
Answer:
C
Explanation:
Majority vote and I also agree that if two substances had the same level of concentration, then they will mnove in and out at the same time.
Which of tWhich of these is a compound?
O
CO2
O2
Cohese is a compound
Which statement best summarizes the current state of land ice in
Antarctica?
a. The Antarctic sea ice has grown over that same time period.
b. The exact reasons are not fully known, but changes in temperature and winds play an important role.
c. Both the growth and loss of ice is occurring at a very slow rate.
d. For several years, the amount of land ice has been decreasing.
A softball is thrown with a force of 10 N. It accelerates at 50 m/s2. What is
it's mass
Answer:
1/5 kg
Explanation:
From Newton's second law of motion:
F = ma
m = Unknown
F = 10N
a = 50m/s^2
Making m the subject of formula:
m = F/a
=10/50
=1/5kg or 0.2kg
Someone please help me on this one thanks
Answer:
25 degrees
Explanation:
if you look at the highest point and trace down, it goes to almost 25, so 25 results in the highest rate
Answer:
D
Explanation:
That is where the highest point is
14. Show the cross for two heterozygous guinea pigs.
a. What percentage of the offspring will have short hair? ________
b. What percentage of the offspring will have long hair? _______
Answer:
What percentage of the offspring will have short hair?
ANSWER 75%
What percentage of the offspring will have long hair?
ANSWER 25%
:)
The percentage of the offspring that will have short hair and long hair will depend on the dominance of this trait, 75% dominant trait and 25% recessive trait.
What is a Punnett square?A Punnett square is a diagram to represent the possible genotypes after mating, in this case, genotypes will be like 1/4 AA, 1/2 Aa and 1/4 aa.
The phenotypic proportion for a monogenic recessive trait after heterozygote mating is 25%.In conclusion, the percentage of the offspring that will have short hair and long hair will depend on the dominance of this trait, 75% dominant trait and 25% recessive trait.
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Use the following experiment to answer questions #16-#20. The materials needed are an ice cube tray, water, a clear jar or glass, and food coloring (darker food colorings are better).
16) Mix the water and food coloring and pour it into the ice cube tray. Put the ice cube tray in the freezer till frozen. Once frozen, fill the clear glass with warm water. Add one colored ice cube to the glass. Observe what happens. What starts to happen?
17) Does the colored water sink or float?
18) Why does the colored water behave in this manner?
19) How does this experiment show heat transfer?
20) What is this process called?
Answer:
the water begins to sink to the bottom of the glass. The colored water behaves this way because of convection currents. As the warm air rises, a pattern of air movement is formed called a convection current. We can see this in air and in water. The process is convection current.
Explanation:
Convection is one of three main types of heat transfer. The other two being radiation and conduction. Convection is the transfer of heat by the movement of heated particles into an area of cooler particles. You can experience convection when you light a match. The air directly above the lit match is always hotter than the air around the match.
This difference in temperature around the match is caused by effect of heat on the density of air. Hot air is less dense than cool air and will rise leaving the cooler air below. As the warm air rises, a pattern of air movement is formed called a convection current. We can see these convection currents in air and in water.
Convection currents in the atmosphere affect our weather. The rising of warm air and falling of dense cool air causes our winds. When warm, moist air rises and mixes with cold air, the atmosphere becomes unstable. This causes thunderstorms.
The Gulf Stream off the eastern coast of the States is a convection current. It carries warm water from the tropics up the east coast north toward the cold arctic waters.
Heat affects the density of water as well. You can create your own convection current with water that will allow you to see the currents caused by the density difference of water at different temperatures.
The warm water will melt the ice cube, but the resulting water will be very cold. This cold, dense water will sink to the bottom of the glass. You can see this happening because the melted water from the ice cube will be whatever color you made your ice cube.
As the water warms, it will rise back to the top of the glass. The colored water will allow you to see the convection current in the glass.
A nerve impulse is an electrical charge running across a neuron. Explain why the simulation supports this explanation.
Answer:
Sudden reversal of the electrical charge across the membrane of resting neuron
Answer:
Stimulation of a neuron causes a change in the charge inside the cell from negative to positive. This change is caused by ions, which are atoms with an electrical charge, moving across the cell. This change within the cell is consistent with the definition of an electric charge.
Explanation: PLATO ANSWER
