What excess from the body does respiration eliminate?
a. pleura
b. oxygen
c. carbon dioxide
d. alveoli

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

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.