Answer:
List the features of gas exchange surfaces in animals.
1)They are moist to prevent the cells from drying and to allow gases to dissolve;
2)They have a large surface area , so that a lot of gas can diffuse across at the same time;
3)They have a high concentration gradient - maintained by the movement of air & blood.
Answer:
because science is great and they have completed my
The configuration is a concept that is related to the order (poition) by which different substituents linked to the same central atom, in the case of amino acids, around the central carbon atom. So, amino acids can be divided in two groups, L- and D- forms, analogous to left-handed and right-handed configurations.
On the other hand, protein folding (folded structure of peptides) is the physical process by which a protein chain acquires its conformation (3D structure) that is usually biologically functional.
<span>One group is given a larger dosage than is typically prescribed.
A second group is given a smaller dosage than is typically prescribed
Then results of the groups are compared to each other.
The thing that is missing in this experimental design is a third group who are tested with the typical dosage.</span>
Answer:
The article is not reflecting current knowledge.
Explanation:
Rick Potts had explained some thing which has already been established and published several years back by various scientist, researchers, biologist, ecologists and geologist.
Re publishing something again will not bring laurel to Pott, instead his article would not be considered a suitable article for reference.
Also , if Pott would have published any thing that talks of a way ahead of those previous publication, even then his article could be referred.
