Answer:
Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.
Answer:
Nope
Explanation:
Wind is neither living or dead. Wind does not grow, reproduce, respond to stimuli or evolve. Wind is just wind
Answer:
The students are asked, how do the embryos provide evidence for organic evolution.
Explanation:
The embryos of different vertebrate groups have been found to have similar morphological features during the early stages of development. This similarity suggests a common ancestry. The closer the resemblance between the embryos in early stages the closer the phylogenetic relationship of the organisms.
The whole thing, scientifically, fish are FOOD, not friends because a shark has to and fish is food for the shark... so the whole thing s scientifically incorrect
Answer:
I am almost sure that it is C, but it could possibly be A
Explanation:
