Can I have help on question 1 and 2 please xxx

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

Which of the following situations describes a adaptation for a mole? question 2 options: a mole is blind and cannot see underground. a mole is bright and attracts the attention of predator birds. a mole has a sensitive sense of smell to it find food underground.

If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm