Question

what is the primary goal of conservation?
a. promote habitat destruction
b. maximize economic gains
c. increase human population growth
d. preserve biodiversity and preventing extinction

what led to the extinction of the dodo bird?
a. habitat destruction and invasive species
b. climate change
c. overpopulation of dodos
d. natural disasters

how do human activities contribute to extinction?
a. by reducing invasive species introduction
b. via habitat destruction, overexploitation, and pollution
c. by enhancing biodiversity
d. through controlled habitat destruction

why is biodiversity crucial for ecosystems?
a. it has no significant impact
b. it is essential for ecosystem stability and human well - being
c. it reduces species interactions
d. it complicates ecosystem interactions

Explanation:

• Conservation aims to protect species and their habitats. Biodiversity preservation (option d) is its core goal. Habitat destruction (option a) and maximizing economic gains (option b) are contrary to conservation. Increasing human population growth (option c) isn't a conservation goal.
• The Dodo bird went extinct mainly due to habitat destruction by humans (settlers) and invasive species (like rats) introduced to its island habitat. Option a is correct. Climate change (option b) wasn't the main cause. Overpopulation of Dodos (option c) is false as their numbers decreased. Natural disasters (option d) weren't the key factor.
• Human activities like habitat destruction (e.g., deforestation), overexploitation (hunting, overfishing), and pollution (air, water, soil) contribute to extinction. Option b is right. Reducing invasive species introduction (option a) would help, not cause extinction. Enhancing biodiversity (option c) is positive. Controlled habitat destruction (option d) still harms species.
• Biodiversity is crucial as it provides ecosystem services (pollination, clean air/water) and is essential for ecosystem stability (more diverse ecosystems are more resilient) and human well - being (food, medicine sources). Option b is correct. Saying it has no impact (option a) is wrong. It doesn't reduce species interactions (option c) or oversimplify them (option d).

Answer:

1. d. Preserve biodiversity and preventing extinction
2. a. Habitat destruction and invasive species
3. b. Via habitat destruction, overexploitation, and pollution
4. b. It is essential for ecosystem stability and human well - being