After the sentence, a list of possible interpretations of all or part of the sentence is given. Choose the interpretation you consider appropriate…

Question

After the sentence, a list of possible interpretations of all or part of the sentence is given. Choose the interpretation you consider appropriate for the sentence. “It’s water under the bridge,” indicates that

Answer 1

After the sentence, a list of possible interpretations of all or part of the sentence is given. Choose the interpretation you consider appropriate for the sentence. “It’s water under the bridge,” indicates that

The issue is unresolved.
The situation is worsening.
The matter is forgotten and no longer important. ✓
The problem still lingers.

Explanation

Excretory products vary by organism. Mammals: urea (main nitrogen waste), CO₂, water, salts. Birds and reptiles: uric acid (needs less water – adaptation to dry environments). Fish: ammonia (toxic but easily diluted in water).

These differences reflect habitat. Aquatic animals can excrete ammonia because water dilutes it immediately. Land animals must convert to less toxic urea or uric acid.

Excretion maintains homeostasis – removing metabolic waste that would poison cells if accumulated. Kidney failure requires dialysis because toxins build up dangerously.