Which is an important function of normal flora?

A. Aid with bone marrow production.

B. Crowd out pathogenic bacteria.

C. Destroy digestive track pathogens.

D. manufacture iron in the bloodstream.

The opening through which magma flows through a volcano to the earth's surface is a caldera? true or false

What is one of the five characteristics of life

Which of the following is not a consequence of oil spills for marine life? a. disables fur insulation b. removes nutrients from seawater c. spreads out over a large area d. makes feathers less water-repellent

Where does the energy come from to break the bonds of the water and carbon dioxide molecules?

A client with type 2 diabetes has routine lab work, which reveals elevated free fatty acids (ffa). the client asks, "why is this significant?" the most accurate response would be: select all that apply.

How does a vascular plant's phloem differ from its xylem? A. Phloem is found only in the leaves. B. Only phloem transports water. c. Only water flows through phloem. D. Phloem has a two-way flow of materials,

Many mutations have been identified in the lac operon. A particular mutation prevents the repressor protein from binding to the operator under all circumstances.

What is the independent variable in this experiment? A) temperature B) Number of chirps C) Number of crickets D) Location of the laboratory

The parents of a client with a mental illness being cared for at home tell the nurse that they have been feeling overwhelmed lately. they say, "we need to get away for a few days to recharge ourselves.

Explain how the conversion of wetlands to farmland has impacted streams and rivers.