Answer:
T
Explanation:
A 100% efficient light bulb is the one that converts all the electricity to light without producing any heat. which of that following methods is the most economical way of increasing the light output from a lamp ?
a) Replace the light with a new one
b) Clean the light surface
c) Switch of the bulb
d) None of the above
Answer:
d
Explanation:
Buying a new light bulb will cost money so it is economically inefficient. Cleaning the light surface doesn't increase the light output from the lamp and switching off the bulb means no light at all, therfore the answer is none of the above.
A. Val Pro Pro
B. Leu His Ser
C. Pro Val Pro
D. Val Leu Pro
How is soil polluted?Explain.
Answer:
Main Causes of Soil Pollution
1. Industrial Activity. Industrial activity has been the biggest contributor to the problem in the last century, especially since the amount of mining and manufacturing has increased.
2. Agricultural Activities. The utilization of chemicals has gone up tremendously since technology provided us with modern pesticides and fertilizers.
3. Waste Disposal.
Explanation:
got the information from the internet
Why do yeast not contain chlorophyll?
1. Yeast does not need to absorb sunlight to make energy.
2. Yeast can only survive in the dark.
3. Yeast does not need oxygen to make energy.
4. There is not enough space in the yeast to contain chlorophyll