D.) Both are circumstantial evidence....
Answer:
hope you like it
Explanation:
An abiotic factor is a non-living part of an ecosystem that shapes its environment. In a terrestrial ecosystem, examples might include temperature, light, and water. In a marine ecosystem, abiotic factors would include salinity and ocean currents. Abiotic and biotic factors work together to create a unique ecosystem.
Long term: I could either help a species have more genetic variation or wipe out an entire species. Short term: it could decrease food resources for other species.
Answer:
via hydrogen bonds; there are two between adenine and thymine and three between cytosine and guanine
