The first three answers are natural changes, while the last three are because of human intervention.
Answer:
21 June
Explanation:
Because they can measure the Solstice
Answer:
Bronchospasm
Explanation:
Bronchospasm is known to be a condition that results from the contraction of the muscles that is found in the wall of the bronchioles which result into obstruction and narrowing of the respiratory airway. Thus, substance released from basophils or mast cell under the control of anaphylatoxin usually causes Bronchospasm. Furthermore, Bronchospasm is commonly caused by asthma and can also be caused by allergic reactions, respiratory infection, and chronic lung diseases.
Examples of Gravitational Potential Energy:
-A raised weight.
-Water that is behind a dam.
-A car that is parked at the top of a hill.
-A snow pack (potential avalanche)
-A yoyo before it is released.
-River water at the top of a waterfall.
-A book on a table before it falls.
-A child at the top of a slide.
Examples of potential energy include: A rock sitting on the edge of a cliff. If the rock falls, the potential energy will be converted to kinetic energy, as the rock will be moving. A stretched elastic string in a longbow. When the elastic string is released, it will cause the arrow to shoot forward.
Answer:
Fish farming or pisciculture involves commercial breeding of fish, usually for food, in fish tanks or artificial enclosures such as fish ponds.