At which of the following angles will the sunlight received at a location on Earth fall over the smallest area?
80°
659
40°
10°

80º

Explanation:

Because the more the tilt, the less the sun can shine on Earth (it shines on Earth from the side), meaning less solar radiation will be able to enter the atomposhere.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.