Answer:
Differential reproduction is called the one that occurs as a result of the differences between the individuals that make up a society or sample, where it is those with comparative advantages who manage to reproduce, while those who do not have said advantages tend to die out. It is, in short, a practical application of Charles Darwin's theory of natural selection.
Thus, if there is an overpopulation of a certain species, a series of effects will occur (such as the scarcity of resources, the lack of living space, etc.) that will tend to gradually decrease the population to return to an ideal number of individuals. In this aspect, differential reproduction will be applied, being able to reproduce those that have comparative advantages over the rest, which will inevitably become extinct.
composition of water yam
1. Which of the following is NOT a characteristic of life.
A. Being Multicellular
B. Responsiveness to the Environment
C. Growth and Change
D. Maintain Homeostasis
Answer:
it may be a or d but b and c are a characteristic in life
Describe how the gonorrhoea pathogen causes disease after it enter the body
Answer:
Gonorrhea is transmitted through sexual contact with the penis, vagina, mouth, or anus of an infected partner. Ejaculation does not have to occur for gonorrhea to be transmitted or acquired. Gonorrhea can also be spread perinatally from mother to baby during childbirth.
3.4 Briefly describe the purpose of conjugation in paramecia.
Answer:
Conjugation is a process of exchange of genetic material between two organisms. paramecium is a unicellular protozoan in which true sexual reproduction is absent. so in these organisms conjugation brings genetic variatin in new generations.
Explanation:
The function of conjugation in paramecium is to exchange genetic material between organisms and make new combinations of genetic material.
Which natural forces can create sediments
A Wind and ice
B Moving air,moving water,and moving ice
C Water and ice
D sunlight
Answer:
C - Water and iceHope it help❤️
What would the molecular formula be for the following? For each answer, state what kind of bonds hold the molecule together (ionic, polar-covalent, or non-polar covalent)
a. Flourine reacting with sodium
b. Oxygen reacting with carbon
c. Nitrogen reacting with hydrogen
d. Silicon reacting with hydrogen
e. Sulfur reacting with hydrogen
f. Magnesium reacting with oxygen
Answer:
Explanation:
A. sodium fluoride = NaF = ionic bond
B. carbon dioxide = CO2 = polar covalent bond
C. hydrogen nitrate = 2NH3 = ionic bond
D. silicon hydride = Si nH 2n+2 = polar covalent bond (i think.. could be non-polar but definitely not ionic)
E. hydrogen sulfide = H2S = non-polar covalent bond
F. magnesium oxide = MgO = ionic bond
hope this helps! :)
HELP PLEASE DO THE WHOLE PAGE
Answer:
'krf'klmf
Explanation:
lkn4f4klng
What is the role of helicase in DNA replication?
Answer:
The helicase is essential because they separate the double-stranded DNA into single strands so that it could be copied.
Hoped this helped!
2. Insects which attack woollen clothes are
a. Silkworm b. silver fish c. ants d. butterflies
Answer:
a
Explanation:
it would be a silkworm because they feed exclusively on animal fibers such as wool. hope this helps!
Sickle cell anemia and albinism are both recessive traits in humans. Imagine that a couple, already pregnant with fraternal twins, has just learned that they (the couple) are both heterozygous for both of these traits. As the couple's genetic counselor, the couple asks you what is the probability of having both of the twins be albino and have sickle-cell anemia.
Answer:
81/256
Explanation:
By doing a test cross of albinism and sickle cell anemia you'll see that the probability that one child is unaffected by either conditions will be 9/16. Both children would be 9/16 * 9/16.
Since fraternal twins are developed from two separate fertilization events the probability chance will be independent.
Place the following events in
the cell cycle in the proper
order:
a. Anaphase
b. Cytokinesis
C. G2
d. Telophase
e. G1
f. Prophase
8. S
h. Metaphase
The cell cycle in the correct order is G1, S, G2, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis.
What is the cell cycle?Prophase, metaphase, anaphase, and telophase are the four phases that a cell goes through. To form chromosomes, chromatin condenses (sister chromatids joined at the centromere).
In prophase, the chromosomes get shorter and thicker, in the center of the cell, during the metaphase, the chromosomes align. Chromatids separate during the anaphase process and travel to the opposing poles.
Telophase: Two nuclei are produced when nuclear envelopes have reformed around each chromosomal group.
Therefore, the cell spends the majority of its time in interphase, which is also when it grows, duplicates its chromosomes, and gets ready to divide.
Learn more about cells, here:
https://brainly.com/question/1600165
#SPJ2
A study is being done to test the effects of temperature on the number of microbial colonies. Four different incubators are set up, each at a different temperature with one culture plate in each. Each plate has the same nutrient content, pH, and are inoculated with microorganism samples from the same source. At the end of the experiment, the number of colonies on each plate is counted. What is the independent variable
Answer:
The correct answer is - the different temperatures of incubators.
Explanation:
An independent variable is a variable in a study or research which is manipulated or changed to check or find the effect on the dependent variable. The independent variable is the only factor that changes in research while other factors remain constant that can affect the result in the study.
In this case or study, there is the only factor that is manipulated is the temperature of incubators is manipulated to see the effect of temperature on the number of microbial colonies. Thus, the different temperatures of incubators is the independent variable here.
which of the following statements about the cells of any multicelluar organisms is true
Answer The DNA in a cell is all the same
Explanation:
You are monitoring Birch Lake,
A. Snails and crayfish would not survive in Birch Lake at a pH of 6.2.
B. Once they die out, the walleye will disappear as well.
Use the following table to answer the question:
Element
Mass Number
Atomic Number
Aluminum
27
13
Nitrogen
14
7
Helium
4
2
Fluorine
19
9
please help
Which element has the least neutrons in the nucleus?
Aluminum
Nitrogen
Helium
Fluorine
Answer:heh
Explanation:
Aluminium , mass no = no of proton + neutron = 27
atomic no = no of proton = 13
no of neutron = 27 - 13 = 14
Nitrogen , mass no = no of proton + neutron = 14
atomic no = no of proton = 7
no of neutron = 14 - 7 = 7
Helium , mass no = no of proton + neutron = 4
atomic no = no of proton = 2
no of neutron = 4 - 2= 2
fluorine , mass no = no of proton + neutron = 19
atomic no = no of proton = 9
no of neutron = 19-9 = 10
Answer:
helium
Explanation:
i took the test and got it right... it also has the smallest number
The bullfrog and the Northern cricket frog both reside in eastern pine forests and use many of the
same limited resources. The relationship between these two amphibians is a form of -
O A predation
O B. competition
o c. parasitism
D.
gommensalism
which of the following is necessary for cellular respiration and photosynthesis to occur
Answer:
Sunlight!
Explanation:
when you move your hand up and down while holding on a jump rope, you make a wave. What is the medium
Answer:
The medium of the wave is the Rope.
Explanation:
This is because it is transverse wave and transverse wave need a medium to transfer energy and this is because in transverse wave,particles of the medium move in a direction that is perpendicular to the direction of the transverse wave. From the question, when you move you hand up and down, you make a wave and the direction of the wave is also up and down which is perpendicular to the direction of the wave.
A scientist wants to monitor the amount of acid
precipitation falling into a watershed.
Which tool would be the best Tor the scientist to use?
O A. pH meter
O B. Dissolved oxygen sensor
O C. Satellite images
O D. Bioindicators
Answer:
A. pH meter
Explanation:
This is because a pH meter measures the acidity of water.
Answer:pH meter
Explanation:
Where does the water that a land plant uses for photosynthesis come from? The water comes from _____.
-Evaporation
-Condensation
-Precipitation
Answer:
precipitation
Explanation:
If I put down an apple next to a banana will it ripen faster?
Answer:
no
Explanation:
17. Which of these processes is the result of the motion of particles in a gas or liquid?
A. conduction
B convection
C. insulation
D. radiation
Answer:
B
Explanation:
How many molecules of water are created when making a lipid?
Answer:
Three molecules
Explanation:
Since fats consist of three fatty acids and a glycerol, they are also called triacyclglycerols or triglycerides. Triacyclglycerols: Triacylglycerol is formed by the joining of three fatty acids to a glycerol backbone in a dehydration reaction. Three molecules of water are released in the process.
Answer: 3 molecules
Explanation: Hope that helps
What causes the earths tides; describe the conditions for the largest tides?
Answer:
Earth's rotation and the gravitational pull of the sun and moon create tides on our planet. Because the sun is so much larger than the moon (27 million times more masssive), it has a much bigger graviational pull on Earth.
What are the four levels of organization in living things? a. cell, multicellular, organ, organ system b. single cell, multicellular, tissue, organ c. larger size, longer life, specialized cells, organs d. cell, tissue, organ, organ system
The color of a light wave is determined by its wavelength. On the COLOR tab, slowly drag the Light wavelength slider back and forth and observe the effect on oxygen production. How does the color of light affect the rate of photosynthesis
Answer:
The color of light determines how effective chlorophyll pigment will be at absorbing light.
Explanation:
Photosynthesis is a metabolic process that requires light, which is an electromagnetic radiation. Light on the electromagnetic spectrum is determined by wavelength. Each region/color of light occurs at a specific wavelength.
Hence, chlorophyll pigment, which is the major photosynthetic pigment effectively absorbs blue and red light in the visible light region of the electromagnetic spectrum. Hence, the rate of photosynthesis will be affected negatively if the color of light is not the one stated above.
Which of the following statements is true?
OA. Chemical reactions can either absorb thermal energy or release thermal energy
ОВ.
Chemical reactions can only absorb thermal energy.
OC.
Chemical reactions can neither absorb thermal energy nor release thermal energy.
OD.
Chemical reactions can only release thermal energy.
Answer: Chemical reactions can either absorb thermal energy or release thermal energy.
please help asap 10 points screenshot attached
i did this question in my biology class. ill text u the answers
(for anyone confused, ik him irl)
have a good day :)
Example on one of the 3 laws of motion
Answer:
Newton's First Law of Motion
Explanation:
A body at rest persists in its state of rest, and the body in motion remains in uniform motion along a straight line unless acted upon by a net external force.
A Class-A 10 mL pipette is supposed to dispense 10.00 mL of water. A lab technician makes three measurements of the volume that the pipette actually dispenses, and obtains volumes of 9.70 mL, 9.69 mL, and 9.71 mL. The pipette is:__________
a) Accurate, but not precise
b) Precise, but not accurate
c) Accurate and precise
d) Neither accurate or precise
Answer:
d) Neither accurate or precise
Explanation:
Accuracy and precision are critical factors in the experimental procedure. Accuracy can be defined as the amount of uncertainty in the process of measurement in relation to the true value (in this case, 10 mL). On the other hand, precision is an independent feature of the accuracy which indicates the repeatability of the measurement process (in this case, three measures weren't repeated). Therefore, precision indicates the confidence of a particular measurement, while accuracy indicates how close is this value to the real value.
