<span>1. A hydrogen fuel cell is more efficient than a combustion reaction because very little of the released energy is released as HEAT.
We need more energy emit as light and less heat. Lesser the heat more the efficiency.
2. </span>when used at home a fuel-cell illuminates the need for <span>an electrical grid</span> because the cell is portable.
As said, it is portable.
The answer is:
B. Cell Cycle
Explanation:
A) Leaves collect light which is necessary for photoosynthesis.
B) All the nutrients are collected from the roots, but I'm not 100% sure
C) Yes, xylem is used for water and nutrients transportation.
D) Pollen is made in anthers, at least I've been thought like that.
E) Well, I'm not sure about that one but it makes sense
i think its a. hope this helps
I believe they should not be allowed to use in United States. Since the result reports are not supporting or providing clear information on how it is safe to use, we should not permit its use. Secondly, there are many health threats linked to the use of DDT in world war 2.
Moreover, we are also unfamiliar with the long term effects of these chemicals. Who knows if they are contributing to health threats.
However the associated health threats of DDT and its breakdown products are mentioned below:
- Breast & other cancers
- Male infertility
- Miscarriages & low birth weight
- Developmental delay
- Nervous system & liver damage
