Which is true about scientific knowledge?

A. It is rarely proven wrong.

B. It is not based on observation.

C. It is agreed upon by all scientists.

D. It changes as new evidence is found.

A species is a group of organisms with distinct characteistics that match others in a population? true or false.

State one way that animal cells differ from the cells of plants and fungi. What is the significance of this difference?

Water supplies are treated with chlorine to kill pathogens. chlorine reacts well with many other chemicals and bacterial cells because it is a strong oxidant. however, legionella pneumophila can sometimes evade killing by residual chlorine.

Untreated streptococcal infections in childhood that can lead to the kidney infection characterized by antigen - antibody complexes clogging the glomerular filters is known as

What division of ANS increase digestive activity?

Name the cells that are produced by the testes and ovaries

What description best explains why viruses can become more pathogenic to hosts that were not affected by the virus before?

The chief force pushing water and solutes out of the blood across the filtration membrane is A) the ionic electrochemical gradient B) protein-regulated diffusion C) glomerular hydrostatic pressure D) the size of the pores in the basement membrane of

From day 23 to 28 the progesterone levels are dropping. What effect will this eventually have on the endometrium?

When both muscles of this pair are contracted simultaneously, they flex the neck forward. When both muscles of this pair are contracted simultaneously, they flex the neck forward. a. platysma b. semispinalis c. sternocleidomastoid d. trapezius