Which of the following scenarios is representative of parasitism? a. tapeworms living in a mammal’s intestinal tract b. remora fish attaching themselves to sharks c. birds feeding on insects stirred up by grazing animals d. birds eating scraps of food from a crocodile’s teeth

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?

Gene expression is the activation of a gent that results in a question 1 options: protein dna mitochondria