Which of the following best describes a consequence of using a renewable energy source? . a. biomass energy pollutes water supplies.. b. natural gas causes air pollution when burned for energy.. c. nuclear power produces harmful radiation.. d. solar power is expensive and requires a large amount of space..

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.

What best describes the structure of the declaration of independence?