Why might polar bears become extinct

a. They do not have any predators

b. they may drown when the glaciers melt

c. their thick fur is not suited for a warming climate

d. too many hurt them

What is the difference between the alleles of a gene? A. Their position on the chromosome B. Their amino acid sequence C. Their pentose sugars D. Their base sequence

You run an osteology lab, where students are able to study the bone structure of various species. To produce clean bones, you introduce insects and bacteria to remove all remaining flesh. Which bacteria would be the best purchase for your lab?

if a flower were orange would it more likely be pollinated by insects or by the wind give at least one reason for your answer

What important role does lignin play in vascular plants?

Not the same as 12.5 millimeters? 0.0000125 km 0.00125 hm 0.0125 m 1.25 cm

Benthos are organisms that live? A. on the surface of water B. throughout the water column C. on the sea floor D. in shallow water

What hormone functions both as a flight or fight response and as a neruotransmitter, sending messages from one neuron to the other?

Develop 3 questions about how genetic disorders are passed from one generation to the next, using the terms: DNA, chromosomes, and heredity.

Choose the best terms to complete these sentences. All seed plants reproduce using , which are tiny grains that develop into sperm cells.

I have to write an essay about why I want to work in the nursing field, but I don't know how to start. I know what I'm going to write about, I have a general idea, I just don't know how to start.