Which of the following is an example of how a biotic factor can affect the population dynamics in an ecosystem? (4 points) a
Lack of water during a drought causes many of the individuals in a population to die.

b
Seasonal temperature changes cause a species to migrate between two ecosystems.

c
Excessive rain and flooding cause organisms in an area to relocate.

d
The population of a predator increases following an increase in the population of its prey.

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.

Sea stars, sea urchins, sand dollars, and brittle stars are all memeber of a group, what is the common name of the group they are all in

How does a gymnosperm prevent itself from pollinating the same tree