In what sphere do chemicals have the shortest average residence time? a) biosphere. b) lithosphere. c) hydrosphere. d) atmosphere. there are 4000 units of energy available to grass at the 1st trophic level of an ecosystem. if the grass is eaten by a mouse & the mouse is eaten by an owl, how many units of energy will be left for the bobcat that eventually eats the owl? a) 4 b) 40 c) 400 d) 2000

What abo controlling alleles could kim give her child

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease