Which of the following is a greenhouse gas?

carbon dioxide

methane

water vapor

all of the above

Which object has the same shape as a DNA molecule? a) pyramidal house b) rectangular TV screen c) spiral staircase d) hexagonal stop sign

What are a primary and secondary consumers

Which process describes nitrogen fixation?

After each step in a dichotomous key. the question get (A) more specific (B) less specific (C) more difficuly (D) less dificlut

Name an animal whose body shape could be divided more than one time to show symmetry

What is the term for the flexible material that forms the structure of the ear? A. Cartilage B. Obliques C. Spongy tissue D. Osteoblast

Suppose you remove your test cultures from the incubator and notice that one of them-a known fermenter-has a gas bubble in the Durham tube. Knowing that fermenters frequently produce gas, you ignore the bubble and proceed to the next step.

In peas, yellow seed color (y) is dominant to green seed color (y). which describes an organism that has nonidentical alleles for seed color? yy and has green seeds yy and has yellow seeds yy and has yellow seeds yy and has green seeds

What would you expect to happen if sea otters were removed from this food web? Check all that apply. The population of elephant seals would decrease. The population of kelp crabs would increase. The population of kelp would increase.

When blockages in the bloodstream read the Brian it can cause blank?