Answer:
In water cycle, water evaporates from the sea and oceans in the form of water vapors due to the radiation of the sun. This evaporation in the ocean is the starting point of water cycle.
Explanation:
Water cycle is also called hydrological cycle. In this cycle , water evaporates from water bodies such as rivers, seas, ponds and oceans etc. Water is also evaporated from plant bodies in the process of both evaporation and transpiration. This water moves in the form of vapors and forms clouds. These clouds moves to the land and fall on the earth surface in the form of rainfall and snowfall. From there, this water moves to the oceans through lakes and rivers and repeat the cycle again.
Answer:
Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too. Carbon moves from plants and animals to soils.
Explanation:
Secondary pollutants are more harmful than primary pollutants. False
<h3>Primary and secondary pollutants</h3>
Primary pollutants are pollutants released directly to the environment from their sources.
Secondary pollutants are formed from the reactions of primary pollutants with other substances in the environment.
Both primary and secondary pollutants can equally be harmful to living organisms. What distinguishes their harmful level would be the nature of the substance.
Thus, saying that secondary pollutants are more harmful than primary pollutants is not completely true.
More on pollutants can be found here: brainly.com/question/23857736
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Answer:
Generally, the unsaturations of the fatty acids are of the cis type. This causes the arrangement of the molecule to be angled, with the apex at unsaturation. This angulation causes the melting points of unsaturated acids to be lower than those of their saturated counterparts and therefore are liquid at room temperature. Double bonds in trans distort little crystalline symmetry, which is very similar to that of saturated fatty acids.
Explanation:
They are long chain carboxylic acids, usually have no carbon pair (14 to 22), the most abundant have 16 and 18 carbons.
Fatty acids are saturated when they do not have double bonds, they are flexible and solid at room temperature.
Unsaturated or polyunsaturated if there are double or triple bonds in the chain, rigid at the level of the double bond being oily liquids.
Physical properties
- Solubility. They are bipolar or amphipathic molecules (from the Greek amphi, double). The head of the molecule is polar or ionic and therefore hydrophilic (-COOH). The chain is apolar or hydrophobic (-CH2- and -CH3 terminal groups).
- Melting point. In saturates, the melting point increases due to the number of carbons, showing a tendency to establish Van der Waals links between the carbonated chains. Unsaturates have fewer interactions of this type due to the elbow of their chain.
Answer:
Trees are vital. As the biggest plants on the planet, they give us oxygen, store carbon, stabilise the soil and give life to the world's wildlife. They also provide us with the materials for tools and shelter.
Explanation:
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