Which of the following is a soil conservation practice in which trees
and shrubs are planted in a linear
fashion that is designed to enhance
crop production by protecting the
soil, people and livestock from the
effects of the wind?
A. Crop rotation
B. Wind breaks
C. Contour plowing

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

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.