The sun is the ultimate source for energy on the earth.
a. true
b. false

So we want to know is it true or false that the Sun is the ultimate source of energy on Earth. The answer is true because fossil fuels are solar energy trapped in the Earth's surface. Water cycle is dependent on solar radiation and we use water to produce electricity. We use solar panels to produce electrical energy. And also, all plant life harvests solar energy.

Answer(b) 60 miles per hour;

Iwould have to say sorry i can't elaborate more. hope this though!