Answer: Fishing, Overfishing is a huge problem depleting the amount of fish.
Explanation: swimming does no harm, agriculture is not in water and boating is not as big as a problem of fishing.
C Selective breeding
you are selecting which trait you want for the next generation
Mostly position 9, you probably also should check positions 6 and 12. The Moon’s gravity starts to affect the ocean’s tides the closer it gets towards one side. The ocean tides on sides 1-5 will be high as a result, because they start to get pulled upward by the gravity of the moon.
Answer:
Plants get their nitrogen indirectly from the air via microorganisms in the soil and in certain plant roots.
