Parasitism, mutualism, and commensalism are
examples of symbiotic relationships. All symbiotic
relationships exist between
a. organisms from the same species that live in direct
contact with one another.
b. organisms from two different species that live in
different ecosystems.
c. organisms from two different species that live in
direct contact with one another.
d. organisms from the same species that live in
different ecosystems.

4.06 hc)a five-year review of threats to the southern resident orca population of the united states concluded that the top threats were prey availability, contaminants, and effects from recreational and whale watching vessels. further down the list are oil spills, disease, and effects from commercial vessels not targeting whales. how might this list be different if it were for transient whale populations, which have a larger average population size and live farther offshore in open waters? a)the transient population is more likely to be affected by contaminants. b)the transient population is less likely to be affected by whale watching vessels. c)the transient population is more likely to be affected by disease. d)the transient population is less likely to be affected by prey availability.

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Construct at least two possible hypotheses for the student’s experiment.