The answer is
1) Valves between atria and ventricles close, 2) first heart sound heard, 3) valves between ventricles and body close, 4) second heart sound heard
Protons are positive
electrons are negative
neutrons are neutral
If an atom gains an electron, it will have a negative charge.
C. Co2 and glucose are the main products
The largest organism is Fungi in Oregon (IT'S LIVING) and it covers roughly around 2,000 acres <span />
Producers are organisms that make their own food. Plants would be an example. Primary consumers would be those that eat producers(plants,algae). Secondary consumers are animals that eat primary consumers. Herbivores are animals that only eat plants. Carnivores are those that only eat meat and don’t eat plants. Omnivores are those that eat both meat and plants. De composers are those that decompose organic material like dead animals. The herbivores here are the kangaroo rats,grasshoppers and bunny’s. The carnivores here are the hawk,lizard,tarantula and rattlesnake. I don’t think there is an omnivore. And the only decomposed here is the bacteria. As it decomposes the bodies of the animals when they are dead.