Active transport driven directly or indirectly by metabolic energy
In alternate leaf patterns, how many leaves are produced at each node?
Answer: One
Answer:
C. Reproduction and Variation
Explanation:
Reproduction could cause gene and chromosomal mutations in the offspring therefore causing variation. The variation could either helpful or detrimental to the offspring depending on the environment and if it helps them live or not.
Hydrogen fuel works on the principle of making water by H2 and O2 !!
At the cathode (negative electrode): H2(g)-2e →2H+(aq)
At the anode (positive electrode): 4H+(aq) + O2(g) + 4e– → 2H2O(g)
* As there is no harmful gasses evolve, and only water is formed so these cells are clean and healthy to use !!
(ADDITIONAL)
and remember these are 90-98% efficient !! as compare to petrol or diesel that are 50-60% efficient !!
Hydrogen fuel cells are used in Space programs to make pure water and other purposes !!
