After a forest fire, there was a severe drop in the population size of koala bears. Which of the following describes the gene pool of the remaining survivors? A) A selective process caused an increase in the population's genetic variation.
B) The founder effect caused the chance event that altered the allele frequency.
C) Bottleneck effect led to over-representation of certain alleles in the new gene pool decreasing genetic diversity.
D) Gene flow led to an increase in the gene pool's allele frequencies.

tissue

explanation:

it is actually formed by geoup of cells which is tissue

you can't see the options

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.