Answer: c. iris – controls the pupil
Explanation:
The iris, a structure which is primarily made up of smooth muscles. These smooth muscles surrounds the pupil. The light enters the eye through pupil which is a black hole present in the middle of the eye. It allows the light to strike the retina. It controls the size of the pupil this way it helps in regulating the amount of light entering the eye. The pupil becomes wider in the darkness and becomes narrower when the light intensity is more. These actions are controlled by iris.
Answer:
The total amount of matter on Earth constantly increases.
Explanation:
This is because there are always new things taking birth every second and they have matter in them, so the matter is increasing constantly.
The answer is c)lysosome . Because lysosome is the organelle that contains, digestive enzymes. It's responsible for digesting food.It can also be used, when a cell needs to be destructed. The process of a cell destructing itself is called "autolysis" , lysosome is used in this process.
a) Natural Selection
The moths that were lighter stood out on the dark bark, becoming easy targets for pray and eliminated light gene pools.
