What does the evidence suggest as a cause of the mass extinction 65 million years ago

What is the main function of the B lymphocyte? A. maintain fluid balance B. produce antibodies when triggered by antigens C. produce T lymphocytes D. transport fat through the lymphatic system

Explain how hypertonic hypotonic and isotonic solutions differ

An epidemiologist is investigating a new disease and observes what appear to be bacteria

Which circles have an area of 16pi in2? Choose all answers that are correct. A. a circle with a radius of 2 in. B. a circle with a radius of 4 in. C. a circle with a diameter of 8 in. D. a circle with a diameter of 16 in.

Suppose a shopping mall is built near a rabbit warren, leaving less land available for rabbits how will this affect the environmental's carring capacity?

How are a hypothesis a prediction and an experiment related

Two species of garter snakes live in the same geographic area. One lives mainly in water and the other mainly on land; therefore, they rarely encounter each other and do not interbreed. What type of isolation is this?

Matter that has a definite column but no definite shape is a

Many pharmaceutical drugs specifically inhibit transcription in bacteria but not archaea or eukarya. why would drugs that inhibit transcription only affect bacteria and not archaea even though they are both prokaryotes?

How do the sperm cells of nonvascular plants reach the egg cells during reproduction? The sperm cells are blown by the wind and land on the egg cells. The sperm cells swim to the egg cells through their watery surroundings.