An interaction between organisms that rely on the same resources

A. Ecosystem

B. Organism

C. Competition

D. Population

E. Resources

Light waves can move through , but they travel fastest when they move through a(n) .

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.

Apropane torch is lit inside a hot air balloon during preflight preparations to inflate the balloon. which condition of the gas remains constant