Answer:
leaf veins ..........................
Answer:
b. He is missing a control group of mice that did not receive the new antibiotic.
Explanation:
He only has data that the antibiotic works, but not that it is more effective than existing treatments.
Answer:
The working of both smooth and cardiac muscles is involuntary while skeletal or striated muscles move according to our will and are voluntary in action.
Explanation:
I believe the CORRECT answer is (A) (if i am wrong please forgive me) (A seems the most logical answer)
Geographical variation refers to differences among populations in genetically based traits across the natural geographic range of a species. ... In the simplest case, we divide these factors into purely genetic versus environmental components to tease apart their relative contributions to observed phenotypic variation.