What are the five types of materials used to make welding rods?

What describes the plant during cellular division

A cell must expend energy to transport substance using

Dr. Smith has discovered a bird that he believes is a new species. Dr. Wilson says he will only be convinced if Dr. Smith finds several more of the same type. Why might Dr. Wilson feel this way?

Bacteria and fungi are examples of what type of organisms

Which of the following energy sources is associated with nitrogen emissions? a. biomass b. wind c. solar d. geothermal

Which of the following are reactants in the process of aerobic respiration? A. carbon dioxide and water B. carbon dioxide and oxygen C. glucose and water D. glucose and oxygen

What is the answer to 6 divided by 0?

Why does dna use thymine instead of uracil?

What will likely happen to a species that cannot adapt to changing environmental conditions?

Is air pollution from a factory a change to an organism's abiotic environment or biotic environment?