There are four trophic levels in a food chain: algae, salmon, bears and humans. if algae produce 6500 kj of energy, calculate the amount of energy that is passed on to each trophic level

The term equestrian relates to which animal? bulls cows horses pigs

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?

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.