The correct answer is: reduce the loss of body heat to the environment. A <span>countercurrent heat exchanger works by transferring heat from one part of the body to another that has cooled down. For example, in dolphins, body parts of a high surface area such as flippers are rich in veins. Blood running through these veins that is cooled down is run close to arteries containing warmed-up blood, and some of the heat energy from the arteries is transferred to the veins, thereby allowing the dolphin to conserve heat energy. </span>
If scientists collect and store seeds samples this means that they want to have a collection of the species with the objective of being sure that the species won't disappear- with the objective of preserving the species.
If they collect seeds of many species, this means that they're interested in the diversity of species: the correct answer is (4) preserve the diversity of plant species
The correct statement about glial cells and their function is given below:
- Astrocytes participate in the formation of the blood-brain barrier.
<h3>What do you mean by Glial cells?</h3>
Glial cells may be defined as any of the cells that hold nerve cells in place and help them.
Astrocytes may even form barriers to the spread of neurotransmitter substances released as synapses. It tends to participate in the composition of the blood-brain barrier.
Oligodendrocytes are responsible for the formation of the myelin sheath of nerve fibers in the cells.
Schwann cells myelinate axons not dendrites in the PNS.
Therefore, it is well described above.
To learn more about Glial cells, refer to the link:
brainly.com/question/6822120