Placenta
It also does not allow the maternal and fetal bloodstreams to mix
Answer: He didn’t grow a plant without fertilizer.
Explanation: Manu has nothing to compare his plant to. Meaning, he cannot prove that fertilizers help plants grow. He needs to grow a plant with and without fertilizer.
Answer:terrestrial planet
Explanation:
Answer:
The answer is peer review. <u><em>Peer review </em></u> is the evaluation of scientific research, creative work, or performance by other people in the same field in order to maintain or enhance the quality of the work or performance in that field,
Explanation:
Evaluation of a producer's work by people having the same knowledge or subjects is termed as peer review. Science is an important subject and researches made in this field if made correctly can be very beneficial to humans and earth. But is researches that are conducted are wrongly approved then they can have adverse effects on humans and earth. Hence, any work or scientific research must have a positive peer review.
I believe the answer is B
