Life took about 3.2- 3.7 billion years to reach its present level of complexity. To maintain it, life must always come from life, replicating its DNA and passing that information, however changed, from generation to generation. Selective breeding has resulted in nearly all our crop plants and these plants will 'breed true' consistently to their variety. This inevitable conclusion comes from our modern understanding of the key role played by .

The heritable information living organisms store within their DNA

Explanation:

DNA is a place in the humans where genetic information or data inherited from a person's parents are stored. Over many years ago, man, animals and plant life have adapted on Earth. This has even led to selective breeding in plants and animals where a particular type of plants or animal can created. This has shown how life on Earth has evolved.

As genes present in a organism( plant or animal) multiplies, genetic mutation may occur in the old genes and the new or duplicate genes don't pick up this mutation, this results in life been more complex and it gives the organisms a better ability to evolve and survive.

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: i feel like it would be 3

explanation: