Your answer is c for #3, hope i helped!
Just post them in like 2 or 3 post like maybe 15 or 25 questions per post, if anyone knows the answer, then they will just answer it below!
Answer:
Layer A: inner core
Explanation:
The solid, inner core (Layer A) is comprised mainly of iron and nickel and is scorching hot. The outer core (Layer B) does have iron and nickel as well, but it's in its liquid form. The lower mantle (Layer C) consists of iron-rich perovskite, which is a ferromagnesian silicate mineral. The upper mantle (Layer D) is made of olivine, pyroxene, calcium oxide, and aluminum oxide.
The most prominent role played by plants and algae is that in energy transfer; they are producers and they introduce energy into the ecosystem and different food chains. The earth's only source of energy is the sun, and plants and algae transform this light energy into chemical energy, which is obtained by organisms that consume these plants and algae.
Moreover, plant and algae species are diverse and adapted to carry out their function and survive in different environments, which means they also increase the biodiversity of a region.
