1.What weakens coral exoskeletons? Excess salt

Excess CO2

Excess sunlight

Excess fishes

2.A quarter of marine life lives in which type of ecosystem?

fish

zooxanthellae

coral reef

ocean

3.What do corals provide for zooxanthellae?

food

sunlight

a source of oxygen

a protective area

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?

Suppose a particular species of tulip plant has three alleles for the gene that codes for flower color. the cr allele produces red tulips, the cp allele produces purple tulips, and the cw allele produces white tulips. cr is dominant over cp and cw, and cp is dominant over cw. for each of the following crosses, determine the expected ratio of offspring for each flower color. cr cp x cp cw cr cw x cp cw 1 red: 1 purple : 0 white, 1 red: 2 purple: 1 white, 2 red: 1 purple 1 white, 1 red: 3 purple : 0 white, 2 red: 0 purple : 2 white, 2 red: 2 purple : 0 white