A human red blood cell has on average a diameter of 7.6 microns (1 micron = 1 µm). What is this in nanometers?

What is the most common element in your body biology?

Given the following evidence; which does not support the theory of Continental Drift? A) climate B) fossils of plants and animals C) magnetic strips in the ocean floor D) land features match up (like mountains) on different continents

Charles Darwin spent over 20 years developing his theory of natural selection. True or false?

Which is a binary star?

Whichever dna strand is transcribed, the rna polymerase reads the template strand from 3′ to 5′. a. True b. False?

Nerve impulses are sent to slow the heart's rate of contraction. the nerve fibers sending these signals will most likely belong to which division of the nervous system?

What do animals respond to stimulus?

What are manifestations of anger that might lead a nurse to believe that a client's anger will progress to violence?

Which of these is an environmental effect of burning fossil fuels 1. habitat succession 2. soil erosion 3. flooding 4. temperature increase

Arrange the tiles to show the sequence of the steps in a scientific investigation. make an observation ask questions construct a hypothesis test the hypothesis analyze the results and make conclusions communicate the result