Answer:
Pine trees are conifers!
Explanation:
Your question was a bit confusing but I'm assuming you are asking which group does pine trees belong to. Hope this helps!
Answer:
plate boundaries
Explanation:
i just think i remember it from 6th grade Imao, its been a couple years though
A frog is an amphibian so it survive both on land and water
Hope this helps:)
Answer:
There is a higher oxygen content in the air of the lungs than that of oxygen-depleted blood and a lower carbon dioxide concentration. This gradient of concentration causes gas exchange during respiration.
Explanation:
<h2>
It may become endangered </h2>
Explanation: <u><em>If organisms cannot adapt to the changes in their ecosystem, they may move to another location. If they will not move, the species may become threatened, endangered, or extinct. Under an evolutionary phenomenon called relaxed selection, traits that were advantageous in one time and place become obsolete in another. Traits that aren't actively maintained by natural selection tend to become smaller or less functional over time, studies suggest.</em></u>
