Explanation:
the human body contains 7 billion atoms. there is 2/3 hydrogen, 1/4 oxygen & 1/10 carbon. 99% of the total in the body.
Answer:
The main difference between Prokaryotic and Eukaryotic cell is that, eukaryotes contain membrane bound organelles like nucleus where as prokaryotes do not. The genetic material is present at the center and is called nucleoid in prokaryotes.
Explanation:
Example of prokaryotes include bacteria and archea bacteria. Examples of eukaryotes include plants and animals. Prokaryotes lack organelles such as mitochondria, endoplasmic resticulum and lysosomes which are present in eukaryotes. Both the groups contain ribosomes but its 70s ribosome in prokaryotes and 80s ribosomes in eukaryotes.
<span>The burns are on his face, which, according to the rule of nines, constitutes 9% of an adult's body area.
Hoped I helped!
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I believe, from my understanding, that Producers take up nitrogen to make amino acids.
It must be a producer as they are often plants in the soil, also, legumes do take up nitrogen, but 'fix' it into ammonia (N2 + 8H+ + 8e− → 2NH3 + H2) via Rhizobia bacterium.
The evidence that the scientist have of the Silurian period are fossils.
<u>Explanation:</u>
Silurian period is the third period in the Paleozoic era and it occurred between 443 million years ago to 416 million years ago. The main evidence of Silurian period that the scientist have is the fossil evidence. Silurian period was marked by the rising sea levels.
The continents also were low at that time. This enabled the development of life in shallow waters and terrestrial ecosystem. The fossils of coral reefs from the Silurian period have been found. Earliest arachnids like millipedes, centipedes originated in the Silurian period. The arrival of first plants to land also happened during the Silurian period.