Scientific theories, such as the theory of evolution, must be

A - neither testable nor observable

B - testable and observable

C - observable

D - testable

5. Fruits, nuts and vegetable production are classified as which ore benefits of the horticulture industry? A. Aesthetic value B Recreational value C. Therapeutic value D. Food production

A bird that praeys on mothis is introduced to the habitat with moths and trees like the ones shown below. What will most likely happen to the population of moths in this habitat?

Which phase occurs directly after S phase? O A. G, O B. G₂ O C. Cytokinesis O D. M phase

How do fossil fuels contribute to air pollution? A. releasing carbon dioxide into the air B. recycling oxygen c. By reversing the greenhouse affect D. releasing nitrogen into the air

A limestone rock is found in an Arizona desert. The limestone is gray and has a fish fossil. What can scientists learn from the limestone?

Which important property of DNA did Friedrich Miescher discover? -It is made partly of sugar molecules. -It has a double-helix structure. -It is three-dimensional. -It is found in the nucleus of a cell.

2. What is meant by predation? What is the relationship between a predator and a prey?

Sex-linked recessive disorders are most often passed from mother to sons

Bacteria can grow on meat that has not been cooked to the proper temperature and can cause food borne illnesses. Question 1 True False i think its false

What cause the loss of wetlands