Answer:
The correct answer is "soft rock erodes."
Explanation:
Waterfalls form as streams flow from soft rock to hard rock. This happens as a stream flows across the earth and as the stream drops in a waterfall. In both cases, the soft rock erodes, leaving a hard ledge over which the stream falls.
Answer:
Symbiosis can be described as a biological interaction between organisms of different species.
There are different forms of symbiosis. A type of symbiosis in which both the organisms benefit from each other is called as mutualistic symbiosis.
The blue fungus and the pink plant are able to grow more in size when placed side by side because they undergo symbiosis. They both help each other and develop a symbiotic relationship which allows both of them to have enhanced growth.
Prices would rise for the wood, giving more of an incentive to over harvest the wood, leading to deforestation.
Question 1: The correct answer should be the one that shows the producer first, (->) followed by the herbivore, (->) with the carnivore last.
Producers are organisms that harvest their own 'food' using things like the sunlight and water. Examples of producers are grass and other vegetation.

The herbivore, or an organism that consumes only vegetation and/or algae, consumes the producer.

⇒

The carnivore consumes meat, or other animals such as the herbivore. It's the last.

⇒

⇒

Therefore the answer is
B.
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Question 2: I'm pretty sure that succession as well as regrowth after volcanic eruption (Just look at Mount St. Helens. After 30-35 years after the eruption, nature is
still recovering) happens over time/slowly. I would say global warming [C](?) would be the answer.