Large rocks at the back of a beach cause the wind speed to slow. Windblown sand begins to drop and build small sand piles, which create another windbreak and more sand is deposited. Gradually, salt-tolerant grasses will begin to stabilize the sand dune with a vast network of root systems. The process described is called . community ecology primary succession secondary succession ecosystems ecology

Kara has a plant that produces either purple or white flowers. she crosses a plant that has two recessive alleles for white flowers with a plant that has two dominant alleles for purple flowers. which result would be true of all of the offspring? a) all of the offspring would have two recessive alleles and white flowers. b) all of the offspring would have two dominant alleles and purple flowers. c) all of the offspring would have one recessive allele, one dominant allele, and white flowers. d) all of the offspring would have one recessive allele, one dominant allele, and purple flowers