Which of the following is describes the interaction between the geosphere and biosphere after this forest fire that was caused by a lightning strike? Smoke adds more carbon dioxide into the air.

Water in the river changes from the ash that settles in it.

Animals lose their plant-based homes and food sources.

Plants die causing the land to become more vulnerable to erosion

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.