What is the correct term for blocked sunlight and reduced solar radiation as a result of a volcanic eruption?

The correct answer would be the haze effect.

The haze refers to the atmospheric phenomenon in which fine particles suspended in the atmosphere such as smoke, dust, soot, ash et cetera obscure the sky clarity.

Volcanic eruptions emit a huge amount of mixture of gases and fine particles such as sulfur dioxide and ash. Clouds of these particles reach high in the troposphere as well as stratosphere and block or reduce the number of solar radiations reaching the earth. It reduces the average global temperature.

In addition, the sulfurous gases react with water to form acidic aerosols in the atmosphere. These aerosols absorb and reflect the solar radiations back into space.

a sperm cell fertilizes an egg cell.

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.