Appearance | MCQs

Explanation

I need to put on my shoes and ensure they are securely fastened, possibly by tying

the laces or securing any straps or closures, before going outside.

This ensures they are properly fitted and won't slip off while walking.

Explanation

The most important condition for the appearance of life is water.

Water is crucial for life for several reasons.

1. Solvent Properties: It dissolves various molecules, allowing for the chemical reactions necessary for life.
2. Chemical Reactions: It involves many biochemical processes, including metabolism and energy production.
3. Stability and Environment: It provides a stable environment for complex organic molecules to form and interact.

Life can exist without oxygen, as evidenced by anaerobic organisms that thrive in oxygen-free environments.

However, no known life form can exist without water.