An intron is: a polypeptide that is clipped out of a larger protein post-translationally. an rna sequence that is removed during the processing of an rna molecule in the nucleus. part of an intact, mature mrna that leaves the nucleus. part of an rna transcript that is not present in the dna template. a type of transfer rna.

Most of earth’s fresh water is found in oceans and seas stored in glaciers and ice caps groundwater stored beneath the surface found in lakes, rivers, streams, and reservoirs

Explain how organisms could be harmed by high levels of salt from roadways?

Some species of wasps are social. the queen starts a colony from scratch each spring. she builds a small nest, and lays and raises a group of female workers. the workers enlarge the nest while the queen continues to lay eggs. unfertilized eggs become males that mate with newly hatched females. all of the wasps except the newly fertilized females die by the summer. which best describes this behavior? a)it is beneficial only to the males that do not fertilize eggs. b)it is beneficial only to the female workers that are not fertilized. c)it is beneficial to each one of the individual colony members. d)it is beneficial to the whole species, but not to all of the individual members.