Answer:
3. sexual selection
Explanation:
Because artificial selection is the one made by humans like dog breeds.
Disruptive selection is when extreme values for a trait in a population are favored like big and small sizes. Stabilizing is when the trait is pushed towards the average. Sexual selection is when the trait aids in competition among individuals for access to preferred mates.
Answer:
Option B
Explanation:
Answer A is incorrect as the data is not analyzing how many fish each lake has, but rather the pelvic score of the fish. Answer C is incorrect as the graph shows that the fish in Frog Lake are complete, and that there are 0 fish that have reduced or absent pelvic scores, therefore the fish don't have varying pelvic structures. Answer D is incorrect because the data is not analyzing the size of the fish and again is only analyzing the pelvic score of the fish. This being said by process of elimination the answer would be option B, as the fish in Bear Paw Lack lack complete pelvic spines but rather have reduced or absent pelvic spines.
Answer:
An organism is able to produce sweat so that it cools off which helps it to cool down when exposed to high temperatures.
It's vessels are able to vasodilate and vasoconstrict to regulate temperature.
An organism stores fat as an insulator.
Eye pupils dilate and constrict to control the amount of light entering the eye.
If an organism touches a hot surface, nerve impulses are sent to the body to move and not get injured.
In a nutshell: an organism maintain a constant internal environment with homeostasis. And is able to respond to changes in the atmosphere by electrical impulses (nervous system) or the endocrine system by the release of chemicals (called hormones)
Answer:
Answer D
Explanation:
Unlike the gain or loss of member through immigration, emigration, or death, the age of a population's members does not effect population size, meaning the correct answer is D.
Answer: Denaturing
Explanation: Enzymes are made of amino acids that are linked by bonds, amongst those bonds are hydrogen bonds that are very weak. High temperatures and low pH(acidity) breaks those bonds changing the molecular conformation of the enzymes. That way they denature and loss the ability to perform their functions. High temperatures and acidity alter the structure of their active site preventing the substrate from binding to them. While high temperatures denatures enzymes, low temperature renders them inactive.
