A mutation is one form of genetic variation.
Answer:
The correct answer is - filmed in a close up.
Explanation:
Close up in camera view or in the film making, is a type of the camera shot that involves the facial expression of the actor rather than the expressions that involved the physical expressive potential of the body.
In this shots facial gestures are include the expression and di·a·logue that express the feelings of the character they play.
Thus, the correct answer is - filmed in a close up.
A decrease in dissolved oxygen.
This is because oxygen is a byproduct of photosynthesis. If the plants are in water, some of the oxygen they produce will become dissolved in it. Without those plants, you have less dissolved oxygen.