Many people place bat boxes on their property to provide housing that attracts insect -eating bats. Explain how this activity has a positive effect on the environment.

the statement is true

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.

answerreferred pain;