A garden has a higher level of oxygen compared to a city road. A garden has plants and trees. Plants produce oxygen and sugars from carbon dioxide. A city road is composed of industrial buildings, vehicles, humans, and animals. They consume oxygen that is why the oxygen content is lesser on a city road.
After crystal violet staining, the Gram-positive bacteria may appear dark blue or violet. The cell wall of gram positive bacteria have thick peptidoglycan layer, thus it retains the crystal violet stain compared to gram negative bacteria.
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Answer:
Because amino acids can be arranged in many different combinations, it's possible for your body to make thousands of different kinds of proteins from just the same 21 amino acids. You may see books that say there are only 20 amino acids.
A. off a surface at the same angle it strikes the surface
A scientist focusing on the evolutionary history of specific significant traits is engaged in cladistics.
Cladistics is a method of biological classification in which organisms (plants and animals) are grouped based upon shared significant derived characteristics (synapomorphies). Cladistics identifies various significant shared traits that can be traced to the most recent common ancestor of a group of species and that are not found in more distant groups and ancestors. Cladistics uses various anatomical, molecular and genetic characteristics of organisms.
