What is the primary source of energy for food chains in an ecosystem?

decomposers

producers

consumers

the sun

What is the difference between an atom of silver and anatom of gold? a. one is new and the other is old. b. their net electrical charges are different. c. their atomic masses are different. d.

An individual "step" by a myosin head in one cycle pulls the thin filament about 15 nmnm. How many steps must each actin fiber make in one contraction

Which statement comparing examples of renewable and nonrenewable resources is true? A. Solar energy is a renewable resource because it can't be used up, but oil is a nonrenewable resource because it will eventually run out. B.

Cystic fibrosis is an inherited disorder that affects which of the following? pancreas heart lungs liver

What is the third life cycle stage during incomplete metamorphosis of insects

How are centipedes adapted for a predatory way of life?

A small, dense planet made of rocky and metallic materials are called

What are some sources of oxygen

A longshore current flowing southwards along a coast will primarily transport sediments

How much does an elephant weigh?