Eglin land animals have evolved to produce eggs with the tough shells to ensure that A. external fertilization can take place
B. The egg and the sperm can fuse
C. Parental care is unnecessary
D. The developing embryo does not dry out

c

Explanation:

parrntal care is unnecessary

your mom

Explanation:

is a milf

no but i do not usually comment or use my voice that much when it comes to social media

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.