Answer:
Theophrastus is known as the 'father of botany'.
Explanation:
Manipulated Variable:The speed working on maths problems
Responding Variable: The group that use¬ using a calculator
Controlled Variable:The same maths quetions
Explanation:
base on which an organism lives the soil is the substrate of most seed plants. .A substance acted upon (as by an enzyme)
Answer:
it's E) hawks
Explanation:
because the energy gets smaller as the predators increase.
