The model demonstrating the importance of solar energy for life on Earth in which the student should make is a model of a local food web
All food chains begin by receiving the energy of the sun. This energy is captured by plants which are the producer link in the chain. Plants are able to utilize the light energy from the sun to produce food such as sugar from carbon dioxide and water.
Answer: Valves in the veins
Explanation: The flow of the blood inside the body takes place through the veins and arteries. The oxygenated blood from the heart is supplied to the different parts of the body.
The blood flows from the capillaries to the venules and from there to the veins. The blood moves in the veins by the rhythmic movement of the smooth muscles in the body.
Most of the blood moves against the gravity so there is a chance that it can backflow so to prevent this there are valves in the veins known as one way valves.
Can you show me the following??
