Answer:
The correct answer would be predation.
Predation is one of the types of ecological interactions which take place in an ecosystem.
In this interaction, one organism kills or hunts another organism to feed upon it.
The organism which kills or hunts is termed as predator, for example, Venus flytrap is a predator.
The organism which gets hunted or killed is termed as prey, for example, the insect is prey in this case.
Answer:
Mastax
Explanation:
Rotifers have a small brain, located just above the mastax, from which a number of nerves extend throughout the body.
The well - designed experiment test one factor at a time. The answer to the question above is letter A. 1. The items that are being tested are the independent variables and that they cause the dependent variables to change.