Check all statements that are true. question 2 options: too much nitrogen and phosphorous in the water cause algae to bloom. the nitrogen and phosphorous usually get into the water supply from point sources. algae blocks sunlight from reaching the native water plants, removing the food supply for fish. when large algal blooms die off, the oxygen levels in the water drop and fish suffocate. large algal blooms can be harmful to people and to the commercial fishing industry.

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

answer: dna

because all cells have genes

i think its both a and b