Which term defines a well tested, scientifically supported statement that explains how something works?

A. hypothesis

B. law

C. observation

D. theory

Suppose you inoculate three flasks of minimal salts broth with E. coli. Flask A contains glucose. Flask B contains glucose and lactose. Flask C contains lactose.

Chloroplasts are unable to survive without the energy they receive from cell respiration. What conclusion can be drawn from this fact? It is not possible that chloroplasts ever existed as free-living bacterial cell and endosymbiotic theory is flawed.

What are the cells for animals

How do air masses affect climate?

Why is a reduction in biodiversity due to loss of plant populations especially destructive to an ecosystem?

Which part of the ecoligical pyramid is incorrect

Which characteristics are used to differentiate between the six kingdoms?

When light is refracted, the degree of bending is determined in part by?

How are organisms grouped in an ecosystem? a. by their movement b. by how they get their energy c. by how they migrate d. by how they produce

What happens to about 10 percent of the energy represented in each trophic level?