Question

what is a significant threat to marine biodiversity caused by human activities? a. overfishing and habitat destruction b. enhanced marine conservation efforts. c. increased fish populations d. natural disasters which of the following is a consequence of high energy consumption from non - renewable sources? a. it reduces greenhouse gas emissions b. it contributes to larger ecological footprints and climate change c. it promotes sustainable fishing practices d. it has no effect on marine biodiversity what is a consequence of deforestation? a. depletion of biodiversity b. increase in biodiversity c. enhancement of ecosystem resilience d. preservation of local climates

Explanation:

1. Overfishing reduces fish populations and habitat destruction damages marine living - spaces, both threatening marine biodiversity. Conservation efforts are positive, increased fish populations are good, and natural disasters are not human - caused threats in this context.
2. High energy consumption from non - renewable sources releases large amounts of greenhouse gases, contributing to ecological footprints and climate change. It does not reduce emissions, promote sustainable fishing, and has an indirect effect on marine biodiversity.
3. Deforestation destroys habitats for many species, leading to a depletion of biodiversity. It does not increase biodiversity, enhance ecosystem resilience, or preserve local climates.

Answer:

1. a. Overfishing and habitat destruction
2. b. It contributes to larger ecological footprints and climate change
3. a. Depletion of biodiversity