A virus is a pathogen that contains several components. Which of the following could NOT be a component of a virus?
A A strand of RNA
B A protein shell
C A ribosome
D A viral envelope

What is one way intensive agriculture can contribute to climate change? a. tree loss to agriculture increases earth's albedo b. livestock manure absorbs greenhouse gases c. large herds of livestock release greenhouse gases d. fewer trees are available to replenish petroleum stores appex

How dose plate tectonics effect climate

Which part of the spine is likely to cause a nerve signal to travel faster? a. backbones b. white matter c. nuclei d. gray matter