We need to use differant energy soureces that are renewable. THis is because at the moment most of the enrgy that we use is unrenewable, coal, oil, petrol etc. It takes millions of year to create and is burnt in a matter of minuetes. We need energy that is renewable so we can supply it quickly when we need it because all nonrenewable enrgy's are running out. Only in 1 million years if a fish dies now will it be compatable to turn into fuel. Wind power, solar power, movement energy are all renewable. THis is why it is very important we use those things. Hope this helped :-) Bonnie Year 7
Ice wedging, as described in the passage, is an example of mechanical
weathering.
Mechanical weathering is also known as physical weathering and it
involves the breaking of rock into smaller particles without causing changes
in the chemical properties.Mechanical weathering is usually carried through
physical processes such as freezing and thawing etc.
In this scenario, we were told that water freezes, expands and presses
against the walls of the crack thereby breaking into smaller parts which is a
physical process hence mechanical weathering being present.
Read more about Mechanical weathering on brainly.com/question/458304
Since you didn't tell us the choices, I can pick anything I like.
The one that always does it for me is " foaming brine " .
Answer:
Net force = 125N
Explanation:
Let the two forces be A and B respectively.
Given the following data;
Forward force, A = 150N
Backward force, B = 275N
To find the net force;
Since the two forces are acting in opposite directions, we would subtract them to get the net force.
Net force = B - A
Net force = 275 - 150
Net force = 125N