Which part of an amino acid gives the molecule its characteristic chemical properties?

Why is recycling of carbon important to biotic factors?

What theory states that species stay the same for a long time and then change quickly because of environmental changes? a) natural selection b) allopatric speciation c) coordinated stasis d) punctuated equilibrium

What is true about elements in the same group

Over the past 200 years the level of carbon dioxide in the atmosphere has A. Decreased slightly B. increased until recently, then decreased C. Increased steadily D. Stayed aboutbthe same

Why must aerobic organisms such as yourself breath oxygen and exhale CO2?

The left hemisphere of the brain controls the right side of the body

Which species do Green Crabs consume

How does nuclear fission produce energy? A controlled nuclear chain reaction produces heat, driving steam turbines to produce energy. Moving water turns turbines to produce electricity. Carbon atoms are bombarded by small neutrons.

Which is the first step in the scientific method

What type of organisms make starch & for what purpose