Tha Water Cycle The "first" step in the water cycle is when water in oceans, lakes, or other bodies/collections of water is warmed up by the Sun. Heat adds energy to matter. This causes the molecules in the water to move faster and farther apart, until they move so far apart that they become a gas instead of a liquid - the water becomes water vapor. Eventually the water vapour condenses into clouds. This means that the particles in the water vapour slow down and cool off, resulting in them becoming water droplets. These water droplets group together to form clouds. This is why a parachutist unfortunate enough to fall through a cloud would end up covered in water droplets. When enough water droplets (remember, these are usually very small to begin with) form 'inside' clouds, they become heavy enough to fall towards the Earth. This is usually observed as rain, but Precipitation can also occur as snow, hail, sleet, etc., depending on temperatures and humidity. Runoff is when water travels across land. Rain will land in the ground, streets, oceans, and in streams and rivers. Eventually it makes its way to a body of water. After a while, the water is evaporated and the water cycle repeats. The Carbon Cycle Starts with Carbon in the atmosphere, plants pull the Carbon dioxide out of the air through photosynthesis. Consumers eat plants, and digest parts of the carbon. through respiration, consumers release them back into the atmosphere. When the animal dies off, it eventually evolves into fossil fuels, which is made up largely of carbon. Humans use the fossil fuels and release the carbon into the air. The Nitrogen Cycle Starts with Nitrogen in the atmosphere. The nitrogen gets into the ground through nitrogen fixation (Lightning & Bacteria. Consumers consume plants that absorb the nitrogen from the soil, and when the animal dies and decays, the nitrogen is released from its body and is absorbed back in the soil. We use the nitrogen in fossil fuels to make fertilizers. When it rains, the Nitrogen is washed away (runoff) into surface water, or be absorbed into the ground (Ground Water). The runoff of the nitrogen into the surface water is that it destroys all the oxygen build up in the water, called Eutrophication. The Phosphorus Cycle The Phosphorus Cycle starts with the weathering of rocks. This releases phosphorus into the ecosystem. The phosphorus is absorbed by plants, which are consumed by animals. When the plants or animals die, they release the phosphorus back into the soil through decomposition. Through mining, we use the phosphorus and put it into fertilizers, which is once again consumed by the ground, and released into surface water. Which causes Eutrophication.<span>Full transcript</span>
Nucleotides are monomers composed of sugar and phosphate groups and a nitrogenated base. Several nucleotides compose DNA and RNA.
<h3>What are nucleotids?</h3>
Nucleotides are monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base.
Monomers are composed of carbon, oxygen, and hydrogen atoms, which establish covalent bonds.
Several monomers comprise a polymer. In this way, several nucleotides joined by their extremes compose the nucleic acids.
- Nitrogenated bases are molecules carrying nitrogen and exhibiting the chemical properties of a base. These are purines and pyrimidines.
DNA ⇒ Adenine, Guanine, Thymine, and Cytosine.
RNA ⇒ Adenine, Guanine, Uracyl, and Cytosine
Adenine pairs with thymine or uracil, while guanine pairs with cytosine.
- Sugar group: Sugar is always a pentose.
DNA sugar group contains deoxyribose, with hydroxyl modifications.
RNA sugar group contains ribose with no hydroxyl modifications.
Nucleotides have a certain order or sequence in nucleic acids, which is significant since these sequences carry biological information necessary to carry out cellular functions.
You can learn more about nucleotides at
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They produce many fish with food which is positive, but the negative impact they can have is when there are too many nutrients available phytoplankton can grow out of control, in which they will produce harmful algae blooms that are toxic and can harm sea life.
The correct option is SATURATED FAT.
Fats are divided into two major classes, these are saturated and unsaturated fats. Saturated fats refer to those fats that do not have double bonds in their molecular structures while unsaturated fats are those that have double bonds in their molecular structures. Saturated fats are usually solid at room temperature and they are considered to be less health as food compared to unsaturated fats. Unsaturated fats are usually liquids at room temperature and they are considered to be more health than saturated fats. Examples of saturated fats are cream, butter, cheese, pork, lamb, poultry with skin, etc.
