What was the large size of many Pleistocene mammal species due ...

[joe]

What was the large size of many Pleistocene mammal species due to? What will be an ideal response?

Question 2

What is the distinction between marsupial and placental mammals? What will be an ideal response?

[Perkypinki]

Answer to Question 1

Gigantism may have been an adaptation to cooler temperatures, since large animals have less surface
area to volume and can retain heat more effectively.

Answer to Question 2

Marsupials are born in an embryonic state and then develop further in the mother's pouch. Placentals
develop internally in a placenta into which nutrients and oxygen are carried from the mother into the
embryo.

[joe]

Thanks for the timely response, appreciate it

[nothere]

Great answer, keep it coming