Answer: Electric generator (Kinetic energy or Mechanical work → Electrical energy) Fuel cells (Chemical energy → Electrical energy) Battery (electricity) (Chemical energy → Electrical energy) Fire (Chemical energy → Heat and Light)
Explanation:
D increasing migration to the United States
Answer:
Explanation:
This really does depend on what you have been told. The general answer is B. The population has not increased dramatically in the last little while. It seems to have stabilized at about 7 billion. Experts say the population is increasing about 1% per year until recently. It has increased to the point where to feed all of us, land has to be made more efficient use of.
Want to find the area of rectangular
Formula = L x W
14 x 19 = 266
Answer is 266
Body size affects energy expended for physical activity is TRUE.
<h3><u>Explanation:</u></h3>
Expenditure of energy is found by the body size and body composition of the being while doing any physical activity. Higher weight has a higher energy requirement. It needs higher maintenance and higher resting requirement also.
Smaller and leaner objects move with more active energy as the physical activity required in doing so is less. Since they have less body weight and require less maintenance their energy requirement is less. Hence energy expended is also less in such cases.
In any physical activity, there cannot be a comparison between smaller and heavier beings' amount of expending energy since it depends on the speed, effort, work out efficiency and time taken by them. But, body size certainly affects energy expended during any physical activity.