Answer:
Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle. Meiosis results in four haploid daughter cells by undergoing one round of DNA replication followed by two divisions.
Explanation:
The term "niche" would be best applied to a description wherein species are likely to be considered "fit" to live in an environment that has specific conditions. In addition, the ecological niche mainly involves the organism's interaction with different factors present in the environment.
Eustatic changes are changes in the Ocean which change the global sea level. That is a huge amount of water. Whats something that could generate that much water when melted? (Hint: Global Warming)
They posses the following traits: vertebrae, bony skeleton, four limbs, and amniotic eggs
Phylogenetic trees present common traits to animals in similar phylums.
These trees characterize traits by having the animal ABOVE the trait. Take these few examples from here: primates and rodents and rabbits are the ONLY ones with hair and crocodiles and birds are the ONLY ones with eggs with shells.
Now that you know this, look at the 4 types of animals that must have the similar traits. Look for the characteristics that are below them. They are all above the following: vertebrae, bony skeleton, four limbs, and amniotic eggs. These are the traits that all the organisms similarly have.
For a better understanding, any animals BELOW the traits do NOT have the traits, take for example that sharks and ray-finned fish are below four limbs, meaning they don’t not possess this trait.