Question

between 1880 and 2020, earths temperature increased slightly more than 1°c.

5.the best explanation for this increase is
a. a decrease in the amount of sunlight reaching earth each year
b. an increase in the amount of solar radiation reflected back into space
c. changing concentrations of gases in the atmosphere
d. volcanic activity releasing ash and dust into the atmosphere

1. two different species of animal prefer the same plant for food. one eats the leaves of the plant, the other prefers the fruit. by eating different parts of the same plant these species can successfully coexist because they do not

a. compete for limited resources
b. live in the same area
c. reproduce at the same time of year
d. interact in a predator - prey relationship

Explanation:

Question 5

To determine the best explanation for the global temperature increase:

• Option A: A decrease in sunlight would likely cool the Earth, not warm it, so A is incorrect.
• Option B: More solar radiation reflected would reduce the energy absorbed by Earth, leading to cooling, so B is incorrect.
• Option C: Changing atmospheric gas concentrations (like increased greenhouse gases) trap more heat, causing global warming. This matches the temperature increase trend.
• Option D: Volcanic ash and dust reflect sunlight, causing short - term cooling, not long - term warming over this period. So C is the correct explanation.

To find the reason for the coexistence of the two species:

• Option A: The two species eat different parts of the same plant. So they are not competing for the same limited resource (the plant as a food source, but different parts). This allows them to coexist.
• Option B: Living in the same area doesn't explain coexistence if they compete for resources. So B is not the reason.
• Option C: Reproduction time is not related to their food - based coexistence. So C is incorrect.
• Option D: They are both consumers of the plant, not in a predator - prey relationship. So D is incorrect.

Answer:

C. changing concentrations of gases in the atmosphere

Question 6