Answer:
Water vapor is a green house gas which absorbs the heat radiated from the earth's surface and keeps the earth warm. Clouds are formed by the condensation of water vapor in the atmosphere. They shield the earth from the sun by reflecting or scattering the solar energy and also trap the heat from the earth's surface. Thus both clouds and water vapor act like insulators from the sun and warms the planet.
Explanation:
When the earth’s surface get heated by the sunlight, some of the heat radiates back into the atmosphere and most of this heat is absorbed by gases in the atmosphere called green house gases. This process is called greenhouse effect, which keeps the earth warm. The green house gases mainly consists of carbon dioxide and water vapor.
Water vapor is formed through a process called evaporation. In this process, water from the ocean, rivers, and lakes evaporates to become water vapor using the energy from the sun. Water vapor also moves into the atmosphere by transpiration (plants) and sublimation (snow and ice).
The water vapor cools down and transforms into water droplets by a process called condensation, as it rises high in the atmosphere where the air is cooler. This water droplets that formed by condensation make up clouds. Low, thick cumulus clouds reflect majority of the solar energy straight back into space and thus cool the earth. High, thin cirrus clouds scatter the solar energy within the atmosphere and also trap the heat emitted by earth, thus warming the planet. Thus both clouds and water vapor act like insulators from the sun and warms the planet.
Deforestation is the progressive decrease of the forest as a consequence of human activities. This practice (deforestation) irreversibly alters the ecosystem and has adverse effects on human health.
Deforestation is the progressive decrease of the forest regions in order to use deforested lands with diverse purposes (e.g., agriculture, urbanization, etc).
In the short-medium term, deforestation may lead to many negative outcomes associated with the loss of biodiversity.
Moreover, it is well known that trees release oxygen and consume carbon dioxide during photosynthesis.
In consequence, in the long term, deforestation may cause climate change (e.g., desertification, soil erosion, flooding, etc.), which is associated with an increased amount of greenhouse gases in the atmosphere.
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Answer:
Cyclic
Explanation:
It is cyclic because as the number of predators increase in the ecosystem, the number of preys decreases with time. This decrease in preys means lesser food resources for the predators which then decreases the population of the preys. As the predators decrease the number of preys starts to recover and increase in population.
The cycle goes on and on which makes it a cyclic relationship in the nature of predator-prey dynamics in stable communities
29.D
30.A
31.C
32.A
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