Answer:
Chemical reaction
Explanation:
Chemical changes happens when a substance combines with another to form a new substance (or unexpected color, temperature or smell), called chemical synthesis or, alternatively, chemical decomposition into two or more different substances
1 is A. a mold.
2 is B. <span>all of the changes during Earth's history have been slow and gradual.</span>
Answer:
DNA never leaves the nucleus; RNA is in the nucleus and in the cytoplasm.
Explanation:
DNA and RNA differ from each other with respect to their structure, function, and location. DNA is always present in the nucleus and never leaves the nucleus.
DNA replication and transcription also occur in the nucleus to form DNA and RNA respectively.
On the other hand, RNA is present in both the nucleus and cytoplasm. The mRNA leaves the nucleus and enters the cytoplasm to serve as a template in protein synthesis. The rRNA and tRNA are also present in the cytoplasm.
Fish and marine mammals sift out the salt from the water, then they drink it.
