The spreading of sound waves around openings in barriers is called?

A. refraction

B. an echo

C. diffraction

D. reverberation

Which of the following summarizes the endocrine system's role? To carry nerve impulses throughout the body in order to maintain homeostasis To receive information about what is happening inside and outside of the body To regulate body activities

There is a significant amount of evidence that can be used to support the theory that Pangaea existed. Which of the following explains how the map shows evidence for the existence of Pangaea?

What might happen to a native fish species if an introduced fish species that ate the same foods was released in the pond?

An advantage of sexual reproduction over asexual reproduction is that sexual reproduction does what?

Animals are heterotrophs / autotrophs

If there is a mutation in a zygote, where is it likely to be found in the fetus? A: The mutation will show up in any fetal cells formed by mitosis but not in those formed by meiosis.

Vaccines are weekend forms of disease causing microorganisms which are given to patients to prevent diseases. After the vaccine is administered what response to the vaccine is triggered in the body? A. Secretion of antigens by lymphocytes B.

Which process allows a mammal to continue to grow in size

A what is a scientific instrument used to sense and record movements in Earth's Lithosphere?

Which process releases energy instead of using energy?