What two new activities did neolithic people engage in

What happens to the nitrogen stored in dead plants and animals?

How does one determine when an ecosystem in in " balance"?

Genetic engineering has already been used to increase plant production. true or false

Where is an earthquake most likely to ocurr

A blastula is a. the innermost germ layer. b. a hollow ball of cells in an embryo. c. a digestive organ. d. a stage of development before a zygote.

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?