Why is it challenging to determine the number of species on earth?

A researcher has applied penicillin to a new strain of Gram-positive bacteria. Surprisingly, she observes no adverse effects on these bacteria. Which statement would best explain her observation?

What kinds of somatic cell gene mutations can frequently lead to the first stages of cancer?

Copper, sulfur, and oxygen are examples of

Heterozygous is when

What is happening to an object when it has a negative acceleration?

How does the live ensure that the body will have a constant supply of energy

Human albinism is an autosomal recessive trait. Suppose that you find a village in the Andes where 1/4 of the population is albino.

What type of wave carries more energy radio waves or visible light?

What trophic level in a sentence?

Bacteria are organisms that reproduce asexually how is this better for them them reproducing sexually