Which of the following is an example of how a scientist might use a model?
question 5 options:
stopwatches measure the amount of time it takes for a swimmer to go one lap in the pool.
a saw is used to cut a board in half.
marbles placed inside a hollow sphere are used to describe protons in a nucleus.
a telescope is used to see the moons orbiting jupiter.

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 was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above

Amines amides and amino acids are categories of