If a certain organism is a primary consumer, what best explains its position in the food web? (See picture above) A. X, because organism X has the same role as the grasshopper
B. y, because organism Y has the same role as grasshopper
C. x, because organism X has the same role as the baby sparrow
D. Y, because organism Y has the same role as the baby sparrow

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

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.

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen