The germ layer located on the dorsum of the embryo is the

a. hypoblast.

b. mesoderm.

c. endoderm.

d. ectoderm.

e. epiblast.

d. ectoderm

Explanation: A particular locale of this layer, the neuroectoderm, turns into a section that folds in and turns into the neural cylinder underneath the dorsal surface of the fetus. The front finish of the neural cylinder forms into the cerebrum, and the back area turns into the spinal line  

endoderm: essential germ layer that proceeds to frame the gastrointestinal tract, liver, pancreas, and lungs  

while, ectoderm: essential germ layer that forms into the focal and fringe sensory systems, tactile organs, epidermis, hair, and nails

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.

in addition to spreading humanist ideas, erasmus has contributed to criticism of corruption in the church.