Which of the following feather types to reduce drag produced by wind resistance during flight?
flight feathers
primary feathers
secondary feathers
contour feathers

Contour feathers

Explanation:

Contour feathers are those typical feathers that line the body of the animal and aid in flight. They help reduce drag caused by wind resistance during flight and have a long rake and vane that form a firm blade on the distal portions and have a feathery texture on the proximal portion. The so-called feathered and receding feathers, known as flight feathers, are types of contour feathers found on the wings and tail, respectively.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation: