3 years ago

The amount of dissolved oxygen in water may decrease because of the

2 answers:

8 0

<span>The amount of dissolved oxygen in water may decrease because of the increase in organic matter in the water. <span>Aquatic organisms breathe and use oxygen. Large amounts of oxygen are consumed by the decomposition of bacteria (when there are large amounts of dead matter to decompose, there will be a significant number of bacteria). Examples: dead organic matter (algae), wastewater, garden waste, oils and fats, all this results in a decrease in dissolved oxygen in the water.</span></span>

Crazy boy [7]3 years ago

4 0

Answer:

Answer would be d

Explanation:

Increase in organic matter in the water

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As a science project, you drop a watermelon off the top of the Empire State Building, 320 m above the sidewalk. It so happens th

MA_775_DIABLO [31]

Answer:

Watermelon is going at a speed of $13.33\ \rm m/s$ in downward direction

Explanation:

Given

Height of the Empire State building = 320 m
Speed of the superman = 24 m/s

since both the motion of both watermelon and the superman is under gravity. The acceleration of both is g in downwards direction. So the relative acceleration between them is zero and when they meet the relative distance covered by them will be the height of the Empire State building.

so let t be the time when they meet given by

$\dfrac{320}{24}\\t=13.33\ \rm s$