Answer: Capillaries
Explanation: Blood vessels have the same basic structures used to circulate blood of different composition to and away from the heart to the body. Blood vessels are arteries, veins and capillaries. Arteries carry oxygenated blood from the heart to the body and veins carry deoxygenated blood from the tissues to the heart.
Capillaries are the ones that work with body cells for exchange.They collect nutrients and oxygen from the blood to the cell and also collect carbon dioxide and waste from the cell to the blood which is transported to the vein where it travels via the venous system and goes through the heart, then to the lungs for gaseous exchange.
Therefore the enswer is, capillaries.
Answer;
A. the Sun's rays are nearly perpendicular to Earth's surface.
Explanation;
-Tropical region receives more solar radiation not only because the Sun’s rays hit the region more directly, but also because they travel through less of the atmosphere to get there.
-Some radiation is absorbed as it travels through the atmosphere, so less energy is lost in tropical regions.
Answer:
This project is feasible because plants that don't have photorespiration are photosynthetically more efficient and have higher productivity compared to plants that undergo photorespiration
Explanation:
C4 plants are photosynthetically more efficient compared to C3 plants because these plants (C4) don't have photorespiration, which is a process that decreases the photosynthetic activity. Photorespiration is the process by which the Rubisco enzyme, which is involved in the first step of carbon fixation, adds oxygen to Ribulose 1,5-bisphosphate (RuBP), an organic compound involved in photosynthesis. This process (photorespiration) is known to waste energy generated by photosynthesis, thereby making photosynthesis less efficient. It is for that reason that C4 plants have high productivity. Some examples of C4 economically important crops include maize, sorghum, sugarcane, etc.
Answer:
no
the speed is affected by the mass of the planets and venus moves in the opposite direction to the other plants
