The atmosphere is necessary for life on earth. Which one of the following is not one of the life-supporting functions of the
atmosphere?
Select one:
a. Stores aerosol pollutants in the troposphere.
b. Contains gases necessary for cellular respiration.
c. Protects living organisms from harmful solar radiation.
d. Absorbs the sun's energy.
e. Plays an important part in the water cycle and many
nutrient cycles.

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

Vascular plants like this one use sunlight to make food through te process of photosynthesis most food a sugar is made in the plant's leaves how does te plant move the sugar to other parts?

In 1994, telomerase activity was discovered in human cancer cell lines. although telomerase activity is rarely present in human somatic tissue, this discovery indicated that humans do contain the genes for telomerase proteins and telomerase rna. since inappropriate activation of telomerase may contribute to cancer, why do you think the genes coding for this enzyme have been maintained in the human genome throughout evolution?