Na and rna share a number of similarities, but they also differ in certain aspects of their structure. which nitrogenous base is found in rna but is not found in dna? uracil adenine thymine cytosine

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?

What are positive impacts of algae? how is it used?