What is the composition of rocks

The majority of bacteria: a. are autotrophic c. are photosynthetic b. are heterotrophic d. are chemosynthetic

Why is it good for aquatic organisms that live in cold climates that ice floats?

Which biogeochemical cycle exists because of the work of bacteria?

In the 1960s, a population of squirrels was being studied in Alabama and the coat color of the squirrels was found to range from the more common gray color (dominant) to the less common red color (recessive).

In human females, the growth of follicle cells is stimulated by what

Why is the inner core the hottest part of the earth

Explain why a food web is a better representation of energy flow in a community than a food chain.

What is the percentage of nitrogen in a humans body

Convection is the transfer of heat from a. warmer objects to cooler objects in liquids and gases. b. cooler objects to warmer objects in liquids and gases. c. cooler objects to warmer objects by direct contact.

What two structures generate the cells responsible for immune responses? •B lymphocytes and T lymphocytes •thymus and lymphocytes •bone marrow and lymphocytes •bone marrow and thymus