The process by which variations that give an advantage become more common in a population is called _____.(1 point)
Responses
a sexual reproduction
a sexual reproduction
physics
physics
harmful mutations
harmful mutations
natural selection
natural selection
Over time, variations in species that give an advantage ...(1 point)
Responses
become less common in the population.
become less common in the population.
can limit selective pressures.
can limit selective pressures.
can limit the number of organisms.
can limit the number of organisms.
become more common.
become more common.
How would reducing low growing plants from an area impact the # of long and short neck tortoises?(1 point)
Responses
The # of tortoises with short necks would increase.
The # of tortoises with short necks would increase.
The # of tortoises with long necks would decrease.
The # of tortoises with long necks would decrease.
The # of tortoises with long necks would increase.
The # of tortoises with long necks would increase.
There would be no change to the # of tortoises.
There would be no change to the # of tortoises.
Question 4
A
The # of tortoises with long necks would increase.
A drought hits a wetland ecosystem, leading to a decline in fish, but not insects. What is the main selective pressure?(1 point)
Responses
leg length of insects
leg length of insects
drought
drought
insect population
insect population
fish population
fish population
The length of winter decreased in an ecosystem where white and brown rabbits live. Which scenario is most likely?(1 point)
Responses
The # of brown rabbits declines.
The # of brown rabbits declines.
The # of white rabbits declines.
The # of white rabbits declines.
The # of white and brown rabbits increased.
The # of white and brown rabbits increased.
The # of white and brown rabbits declined.