Which of the following statements is true? -arteries are thinner and harder than veins. -the left ventricle controls the heartbeat. -veins carry blood away from the heart. -capillaries connect ateries and veins.

Which of the following statements is true?

-Arteries are thinner and harder than veins.<=WRONG

-The left ventricle controls the heartbeat.<=YOUR ANSWER

-Veins carry blood away from the heart.<=WRONG

-Capillaries connect ateries and veins.<=WRONG

answer: b

coz red blood cells marrow and circulates the body for 120 days.

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.