Which example represents an abiotic factor in an aquatic ecosystem?
Water lilies float on top of a pond.
O A population of bass is living in a lake.
O The pH of a lake is decreased by acid rain.
O Dragonflies feed on small insects near a pond.

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.

Identify the examples in which sam interacts only with natural resources

Witch theory suggests all living things are made up of cell or cells