Number one would be Decades
The answer is C
because plants use light energy from the sun to make their own food providing energy. The food created is a type of sugar.
This would make it definitely not A or D. The only answers left would be B and C but, technically the sunlight doesn't deliver the sugar straight to the plant so I'd go with C.
Hope that his helped!
Answer:
A
Explanation:
Element A has 3 electrons in outermost shell so its valency is 3. It will loose 3 electrons to attain stability, as loss of 3 electrons is easier than gain of 5 electrons.
Valency of B is −2 as it will gain 2 electrons to attain stability and combine with other atom.
Valency of A⟶+3
Valency of B⟶−2
(Refer to Image)
Cross multiply valency of A and B
∴A2B3 compound will be formed.
Answer:
Mean = 0.503
Confidence interval = 0.513, 0.493
Explanation:
Further explanations and calculations are found in the attachment below
