Why must whales hold their breath while they are underwater?

Electrified Blood Allows Marine Mammals To Hold Their Breath For 90 Minutes. AP Biologists have unravelled why deep diving mammals such as sperm whales can hold their breath for over an hour when diving for food – they have electrically charged proteins in their blood.

Explanation:

not sure but try c two haploid cells

explanation:

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles