Are all diseases caused by pathogens

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

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