Hydrolysis
This is one of the most important processes in chemical weathering. When water disassociates into H and OH ions and combines chemically with minerals, they bring about changes such as decomposition of crystalline structure and form new compounds. Take for example Silicate minerals. Water acts as a weak acid on them and form Silicic acid, bases and clay which are required for plants to grow. Water also contains carbon dioxide that is absorbed from the atmosphere. It reacts with the minerals directly to produce insoluble clay minerals for plants to grow. Rocks also contain certain substances that are directly soluble in water. This results in the decomposition of rocks.
Carbonation
Carbonic acid is formed when carbon dioxide dissolves in water. This acid attacks many minerals and rocks transforming them into solution. Certain rocks are much affected by carbonated water specifically limestone. Cements that hold sand particles together when removed, leads to their disintegration.
Oxidation
This process adds and combines oxygen to minerals. The absorption is usually from Oxygen which is dissolved in soil water and also that which is present in the atmosphere. The oxidation is more active in the presence of moisture and results in hydrated oxides such as minerals containing magnesium and iron. When the reversals processes of oxidation takes place, the color of the soil changes to green, blue or grey as iron is converted to ferrous iron compounds. Reduction takes place under the conditions of excess water. When chemical weathering takes place, metamorphic rocks and igneous rocks can be considered to be destroying the primary minerals and producing secondary minerals. Weathering initially destroys relatively weak bonding agents in sedimentary rocks, which are made up of primary and secondary minerals. The particles are freed and can be individually subjected to weathering. There are soils forming minerals in rocks that have to undergo hydration when exposed to humid conditions as they do not contain any water. There is an increase in volumes of minerals as they begin to swell when they are hydrating. They lose their luster and become soft. This is one of the most common processes in nature that works with secondary minerals. (taken from a website :)
Hi!
In order for cellular respiration to occur in a cell, the cell needs to have glucose molecules to utilize in the reaction which is as follows:
<u>C6H12O6</u> + 6 O2 --> 6 CO2 + 6 H2O + ATP (energy)
Cellular respiration cannot occur in the absence of glucose. Plant cells acquire this glucose from photosynthesis:
6CO2 + 6H2O + light energy = <u>C6H12O6</u> + 6O2
Animal cells do not need to photsynthesize because they acquire the amount of glucose for cellular reaction from their diet/consumption. Herbivores acquire this glucose from plants, carnivores from feeding off other animals, and omnivores from both feeding off plants and animals.
Hope this helps!
Phytoplankton; small cells that use photosynthesis to turn sunlight into food that live near the surface of the ocean. There also responsible for about half of the Earth's primary production. The seasons also affect how well there doing, they need the climate best for them to produce right, changing seasons doesn't nearly affect them as much as climate change though.
Hope this helps, have a BLESSED day! :-)
Plasmodium is an apicomplexan (previously called sporozoans) that cause malaria in humans. an apicomplexan is a protest that disseminates small infectious cells called sporozoites. and has organelles that are specialised for penetrating host cells and tissues. which are called apical complexes
Outer ear , eardrum, hammer/anvil/stirrup,cochlea
