C. Single and Double

What has happened to the amount of greenhouses gasses in the atmosphere in recent years and why?

Which of the following statements about antibodies is correct? A. Antibodies are polypeptides. B. Antibodies are produced by the bone marrow. C. Antibodies are pathogenic foreign substances. D. Antibodies kill bacteria but not viruses.

Generally, the more sunspots that are present, the greater effect solar energy has on our climate. This means that when there are more sunspots the temperatures on earth generally rises. True or False?

Which of the following describes part of a phenotype

When heart muscle contracts it, does not squeeze the blood inside the heart creating pressure that pushes blood through the body. True Or False

What is an advantage of the zygospores if it is extremely dry or hot

Footprints and trails are examples of trace fossils. True or False

Brainiest what is evolution

What is the term for the curved, parabolic path that an object follows when thrown, launched, or otherwise projected near the surface of the Earth? ... ?

Lactic acid bacteria such as Lactococcus A. produce catalase. B. are obligate fermenters. C. require anaerobic environments. D. use oxygen as a final electron acceptor.