Answer:
cleaning
Explanation:
If people would clean up after themselves, the world's rivers and lakes would be clean. Water pollutants can be somewhat easy to remove by taking the trash out of them.
Answer:
DNA is being transcribed into mRNA
Explanation:
To protect them from ultraviolet rays from the sun.
Answer:
the emperor penguin can hold their breath for 20 minutes
Explanation:
Answer:
a disease transmitted form animal to humans