Answer:
The correct answer is -
Independent variable - the amount (time period) of light given to pots.
Dependent variable - size of tomatoes
Control variable - dark or absence of light
Control group - pot placed in the darkroom.
Explanation:
The independent variable is the variable that is changed or manipulated in particular research or study to see the effect of that variable on dependent variable. In this case, the amount of light each pot gets is the independent variable.
The dependent variable is the variable that depends on the change in the independent variable. The size of tomatoes is the dependent variable here.
The control variable is the variable that remains in standard condition or condition which can be used to compare with the effect of the independent variable. The absence of light on one of the tomato pot is the control variable.
The control group is the group of subjects did not get any treatment that experiment group receives. The pot which is placed in the dark room is control group here.
Predator is an animal hunt.The prey is the animal that is being eaten by other animals. if there a lots of predators and few preys.the predators will compete for food
Amino Acids. A polypeptide IS a protein.
Natural selection is a process by which organisms that are better adapted to their environment tend to D-survive.
Rationale behind not choosing other options:
A. Better adaptation to an environment doesn't lead to an increase in the size of the organisms. The organisms rather become sturdy and efficient at perform optimally as per the requirement in the environment for their survival.
B. Migration takes place to minimize competition for food, shelter, and space in an environment or a habitat.
C. Organisms that evolve new traits tend to better survive in an environment and natural selection favors such organisms over the inefficient ones.
