Answer:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. ... When heat leaves all substances, the molecules vibrate slower.
Answer:
1. A producer is an organism that is capable of making its own food. For example, plants.
2. A consumer is an organism that cannot make its own food and hence fed on producers or other consumers. E.g humans
3. A predator-prey relationship is a relationship in which a predator organism eats a prey organism. For example, lion and zebra.
4. Symbiosis is a biological interaction between organisms of different species.
5. Parasitism is a biological interaction in which one organism gains benefit and harms the other organism.
6. Commensalism is a biological interaction in which one organism gains benefit whereas the other organism neither gets harmed nor gains any benefit.
7. Mutualism is a biological interaction in which both the organisms benefit from each other.
8. A niche is the role which an organism plays in a community or an ecosystem.
9. The three types of symbiosis are Parasitism, Commesalism and Mutualism.
The ecosystem-based fishery management approach views the entire ecosystem as relevant to managing a fishery and allows for the diverse societal uses of fish stocks, including fishing, recreation, tourism, and overall ecosystem health.
The ecosystem-based management of fisheries is an approach, which projects a holistic outlook towards the management of fisheries in such a way that, humans can benefit from in numerous ways like fishing for food or recreation, or for breeding new stocks of fish. All this is done keeping in mind the angle of environment and biodiversity conservation of the area as well. This approach is extremely essential to keep a check on the effects of human intervention in the ecosystem of the fisheries and how to maintain a stable balance between the two without harming the latter.
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Answer:
1. The oxygen deprived cardiac muscles caused chest pain.
2. Unavailability of oxygen and blood supply to skin cells made them pale and cold.
3. Accumulation of blood in pulmonary circuit caused moist sounds.
Explanation:
The left ventricle receives oxygenated blood from the left atrium. Oxygenated blood from the lungs is carried to the left atrium by pulmonary veins. The left ventricle pumps the oxygenated blood to all body parts through the aorta. Failure of the left ventricle deprived the skin cells of oxygenated blood. Oxygen deficiency stopped energy production by cellular respiration. The result was pale and cold skin.
Failure of the left ventricle led to the accumulation of blood in the pulmonary circuit since the blood was not delivered to body tissues. The build-up of blood and resultant higher blood pressure caused moist sounds in the lower lungs.
The blockage of the coronary artery by a blood clot and death of a part of the heart due to lack of oxygen leads to a heart attack. The dead heart tissue is known as infarct and the resultant heart attack is myocardial infarction. Chest pain is caused due to the dead heart tissue or infarct.
