Which agent of weathering breaks down limestone statues?

A.

liquid water

B.

acid chemicals

C.

plants

D.

wind

What is very unusual about creatures known as Tardigrades?

Define Mendel's law of independent assortment. Group of answer choices The expression of one gene has no effect on the expression of another gene. There are two versions of each trait, a dominant and a recessive; the one you get is random.

What benefits do nitrogen-fixing organisms provide in an ecosystem? A. they release nitrogen compounds into the air B. they convert nitrate into gaseous nitrogen C. they turn atmospheric nitrogen into organic nitrogen compounds. D.

A mutation is an heritable change in the dna of a cell. mutations are rare occurrences and are often caught by the cell's "proofreading" system during cell replication and so are not passed on to offspring.

An epitope associates with which part of an antigen receptor or antibody?

Which of the following is a part of the digestive system? Capillary Diaphragm Ovary Saliva

An important characteristic of animals is that all of their cells works the same way, they do not have any specialization. True or False?

When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods? A) latent periodB) fatigue periodC) relaxation periodD) refractory period

Evan and his friends are so surprised to find deer in their subdivision! His mom is getting mad because every morning they are in the garden eating everything they see.

HURRY! Which best describes the structure of the molecules that make up proteins? O A. Carbon + hydrogen + oxygen B. Phosphate + sugar ring + nucleotide base O C. Hemoglobin + oxygen + iron O D. Carboxyl group + amino group + side chain