L9 0 Explain why the mammalian lineage,alive and well during the "reign of the dinosaurs; may have been evolutionarily "depressed" in the ecological ...

Explain why birds are thought to have evolved from theropod dinosaurs.

The question is asking why it was advantageous for mammals to be small while dinosaurs roamed the earth. Um, from the fossil record, we know that dinosaurs were large and mammals may have been their prey. So mammals being small would have made them harder to see find in catch. Um, and it would have made it easier for them to hide from their predator. Um, so being small would have increased, um, the mammals fitness while dinosaurs, um, were present.

So the question here basically asked us to propose some reasons that could foster co evolution during the Triassic period. So we know that CO evolution here is a evolution of two or more. I'm species, which basically, reciprocally affect each other. So, essentially speaking, if we have an increased number and variety of angiosperms, insects and other organisms, it helped make it such at the competition between the two species that helps make various organisms to be adapted to their environment. So those air basically some ways in which this period can co foster rather co evolution.

The question is discussing the carbon is carbon a first year period and how plant life waas Quite active and dominating. But decomposition rates were down And in this period, there was elevated levels of oxygen decrease Selves to and then decreases with temperature. Just questions asking, um, why is there increased oxygen wise there, Decreased Sio two wives, your defense time. So during this time, we're gonna have a lot of plants and we're plants Dio, let's give off oxygen. So, do you have a lot of plants? You're gonna have an increase in oxygen. Likewise, plants take in feel too. So I only air plants giving out oxygen. But they're also taking seeing too. And then since be comp was low during so