Forcing air or oxygen into the lungs when a patient has stopped breathing or has inadequate breathing. also called positive pressure ventilation.

Environmental impacts on evolution : mastery test

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome

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.