Fossil
Explanation:
Fossils are the imprints or remains of living things that tells us the history of life in the geological past.
Fossils can also be defined as the preserved remains of dead organisms that once lived in geologic time past.
- Fossils can be body fossils which preserves part of the body of an organism usually the hard part.
- They can be trace fossils which are the preserved prints of organisms.
- They are usually used to trace the evolutionary history of an organism.
- The tell us about the climatic and environmental conditions of organisms that once lived.
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Answer: to gain energy for the cell
explanation:
Cellular respiration is the process through which cells convert sugars into energy. To create ATP and other forms of energy to power cellular reactions, cells require fuel and an electron acceptor which drives the chemical process of turning energy into a useable form.
Answer: 3
Explanation:
The black widow, the hobo spider, and the brown recluse spider are all poisonous. They all have lethal venom.
RNA is a polymer with a ribose and phosphate backbone and four different bases: adenine, guanine, cytosine, and uracil. The first three are the same as those found in DNA, but in RNA thymine is replaced by uracil as the base complementary to adenine. This base is also a pyrimidine and is very similar to thymine.