How much of earths freshwater is locked away in glaciers and ice caps?

3%

50%

70%

While observing an Elodea plant cell through a microscope, a students noticed some small, moving green disks. These organelles were MOST likely responsible for

Describes at least three everyday things that exist or occur because of science. Make sure you use examples.

Which of the following causes an increase in the intensity of UV radiation reaching the Earth? Question 47 options: a. depletion of atmospheric ozone b. turnover c. biological magnification d. greenhouse effecte. eutrophication

How would Lamarck have explained the length of a giraffe's neck

What are the characteristics of erythrocytes? Erythrocytes contain a nucleus, mitochondria, and ribosomes. Erythrocytes synthesize proteins. Erythrocytes can change shape to squeeze through microcirculation.

You decide to perform a chromatin immunoprecipitation to see whether your favorite gene, the Cool gene, is associated with H3 histones that are methylated at lysine 9 (on the histone tail).

Name classification of matter used in 1800

A key difference between hormonal regulation of the reproductive systems of males and females is that:

Which is the best evidence of an evolutionary relationship between two organisms?

Mt. Aconcagu is the highest peak of which range