Answer: is D. Mercury was used to treat many illnesses long ago, and after being deemed safe by modern doctors its use has increased in the past 100 years.
Explanation:
Promote it by saving animals and garrentkng them.
Answer: b. embryo protection
d. long periods of dormancy until good conditions provide nourishment
Explanation:
Seeds can be defines as a fertilized ovule which contain an embryonic plant.
Seeds provide several advantages in plant sexual reproduction including embryo protection and long periods of dormancy until good conditions provide nourishment.
Seeds contain an embryo which furthur germinates into sporophyte. Seeds are served to protect the embryo when the embryo produces genetic variability and range.
Seeds remain in long period of dormancy until the favorable conditions for growth which is induced by desiccation and the hormone abscisic acid.
Hence, the correct answers are b. "embryo protection" and d. "long periods of dormancy until good conditions provide nourishment".
Answer:
When it stands the test of time and is supported by many experiments.
Answer:
The correct answer will be option-B
Explanation:
Stromatolites are the sedimentary deposited mounds made of layers of phototrophic microbes which were usually present in the primordial times. The stromatolites are one of the oldest fossils is known today which were formed in the shallow water.
They are composed of the phototrophic bacteria or cyanobacteria which survived and still survive by using the carbon dioxide and sunlight to make food material.
Since the bacteria are the prokaryotic organism therefore, the Option-B is the correct answer.