What would you call a species that first enters an environment in the early stages of succession?

A. A pioneer species

B. An alien species

C. An invasive species

D. An endangered species

How does radiation differ from convection? A. Radiation can move through empty space to transfer heat; convection cannot. B. Radiation needs a medium in order for heat to transfer; convection does not. C.

What is the general function of the nucleus?

Unlike microtubules, which operate in the cilia and flagella, what is the role of microfilaments in eukaryotic cells? anchor cells to each other all answers are correct.

Which term defines a well tested, scientifically supported statement that explains how something works? A. hypothesis B. law C. observation D. theory

Enzymes are made of amino acids. To what group of biomolecules does it belong?

Which description is common to both gymnosperms and angiosperms?

How do adolescents behave differently than adults? Are these differences universal or learned?

Which of the following is associated with plates sliding past each other? a. rifts b. subduction zones c. faults d. all of the above

Which of the following most accurately describes the process that must occur when working with research animals covered by U. S.

Female gametophytes in angiosperms are hidden and protected. Where are they found, and what are they called?