Which step in a food chain represents the primary consumer

Watching salt crystals form as ocean water evaporates, a student says, "Look-more and more crystals are appearing. The ocean water is alive!" Which statement is an accurate evaluation of the student's remark? A.

The blueprint of genetic code is known as

Which is a "healthful" fat found in plant products and fatty fish? unsaturated fat saturated fat polysaturated fat trans fat

Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having developed from very similar embryonic tissues. How do biologists interpret these similarities? A.

First scientists to discover that cells come from other cells?

Antibodies are chemicals that are a) Non-specific b) Produced by the body in response to antigen c) Synthesized from glycogen d) Transported by red blood cells

How are S waves and surface waves similar? Both arrive after P waves. Both compress the ground. Both travel through liquids. Both produce minimal ground motion.

A greenhouse is filled with air that contains more carbon dioxide than normal air has how might photosynthesis and plant growth be affected

What region is the main control center for autonomic functions a. Thalamus b. Hypothalamus c. Epithalamus d. Pons e. Medulla oblongata

How cells carry out functions required for life?