Question

how does overfishing impact marine life?
a. improves ocean water quality
b. enhances marine biodiversity
c. increases fish populations
d. disrupts the marine food chain
why is deforestation a concern for biodiversity?
a. it destroys habitats for many species
b. it increases the number of endangered species
c. it promotes soil conservation
d. it decreases global temperatures

Explanation:

First Question (How does overfishing impact marine life?):

• Option a: Overfishing doesn't improve ocean water quality; pollution or other factors affect water quality, so a is wrong.
• Option b: Overfishing reduces species numbers, so it can't enhance biodiversity, b is wrong.
• Option c: Overfishing removes fish, so it decreases, not increases, fish populations, c is wrong.
• Option d: Overfishing removes key species from the food chain, disrupting it. So d is correct.

• Option a: Deforestation removes trees, which are habitats for many species (like birds, mammals, insects), destroying habitats harms biodiversity, so a is correct.
• Option b: Deforestation can lead to species becoming endangered, but it's the habitat destruction (a) that causes the endangerment, not directly increasing the number of endangered species as a primary concern. Also, "increases the number" is inaccurate; it causes species to be at risk.
• Option c: Deforestation often leads to soil erosion, not conservation, so c is wrong.
• Option d: Deforestation increases global temperatures (less trees to absorb CO₂), so d is wrong.

Answer:

d. Disrupts the marine food chain

Second Question (Why is deforestation a concern for biodiversity?):