<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>
Answer:
True
Explanation:
A crowbar makes our work easier by multiply effort because it belongs to first class lever.
And first class lever makes work easier by multiplying the effort
Explanation:
Given parameters:
Force = 30N
Weight Susan = 45kg
Weight of Dad = 100kg
Unknown:
Acceleration of Susan = ?
Acceleration of Dad = ?
Solution:
Force = mass x acceleration
Acceleration = 
Acceleration of Susan = 
= 0.67m/s²
Acceleration of Dad = 
= 0.3m/s²
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There is no change in ocean water temperature when it is from the ocean surface to a depth of 1 km.
