Which best describes the ecosystem at point a?

Your chosen answer is correct. The death rate (the red doted line) is higher than the birthrate (blue line)

B.) is incorrect because it is not true that the population is decreasing as shown the line is going up not down.

C.) is wrong because there is a competition between rates

D.) is incorrect because has not yet reached the carrying capacity.

I hope my answers are helpful!

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///multiple alleles;