60 years is three half life for the substance, so 40*1/2^3=5
Answer:
B
The second student has not yet seen the same sunrise.
Explanation:
Because as the day goes on, the sunlight shines on places without light as the earth is rotating.
Answer:
I'm pretty sure it's B, pressure.
Explanation:
I hope this helped :)
Answer: You take care of it too much. Some plants just want to be left alone. Some caretakers worry too much about the plants, they give it too much of the things they don't need and too less of the things they need.
Explanation:
Answer:
Burning of woods has a negative impact on the climate.
Explanation:
Burning of woods for heating has a negative impact on our climate because it releases carbondioxide gas which is a greenhouse gas that trapped the reflected solar radiation and leads to global warming. We have to used alternative methods for heating such as electric heater instead of burning of wood which produce no pollution and can fulfill the requirement of heating so from the above discussion we can say that the activity has a negative impact on the environment.
