A Difficulty in Presenting Evidence for a Sixth Mass Extinction

question 47

Multiple Choice

A difficulty in presenting evidence for a sixth mass extinction is

• A)that tropical rain forests harbor many unknown species.
• B)that species numbers are declining because of habitat loss.
• C)introduction of new species.
• D)increased global temperatures.

---

Definitions:

Eye Cataracts

A common eye condition characterized by the clouding of the lens inside the eye, leading to decreased vision and potentially blindness if untreated.

Aquatic Species

Organisms that live in water environments, including both freshwater and marine species.

Melanoma-Causing Effects

The potential consequences of exposure to certain substances or radiation that can increase the risk of developing melanoma, a serious form of skin cancer.

Sunlight

The natural light emitted by the sun, which is essential for photosynthesis in plants, influences climate and weather, and provides energy and warmth to the Earth's surface.