Answer:
2 sec
Explanation
travel speed is = 10 m/sec
so for 20 meter = 20/10 = 2 sec
D, the independent variable is what you are changing
The answer is B
A keystone predator would increase niche diversity and help reduce niche competition <span />
The process described which shows the hydrosphere interacting with the lithosphere is river water eroding a rocky bank and carrying silt to the sea which is therefore denoted as option B.
<h3>What is Hydrosphere?</h3>
This is referred to as the combined mass or quantity of water found on the plant such as earth and it comprises of different water bodies such as rivers, seas etc.
Lithosphere on the other hand is referred to as the solid, outer part of Earth which consists of the upper portion of the mantle and the crust in the form of rocks etc.
Water is very important in the ecosystem and is the reason why it is recycled so as to enable its presence which is usually in the form of precipitation. River water which is part of the hydrosphere erodes a rocky bank which forms part of the lithosphere.
Read more about Lithosphere here brainly.com/question/28135333
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the answer is a weigh depends on mass
