What is the capsid of the virus made of?

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution

Which of the following is an abiotic factor in an ecosystem? a. bacteriab. airc. niched. grass(abiotic=non-living) me !

Scientific research about the nitrogen cycle and water quality is mostvaluable to human populations with: afew sources of electricity.b. few sources of fresh water.c. large coastal populations.d. large amounts of farmland.