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Insulin is most definitely a biological substance. It is produced in the body and is made up of carbon and hydrogen atoms.
No, because organisms are made up of organs, and, in turn, are components of ecosystems. The most inclusive biological level would probably be the entire biosphere.
tropical rainforest
Yes. Most certainly. Pharmacology is the study of how drugs (pharmaceuticals) behave in a biological system. Namely the pharmacokinetics (effect of the biological system on the drug) and the pharmacodynamics (effect of the drug on the biological system) of a pharmaceutical of interest.
Starch is a biological compound, or biomolecule. It is a polymer of glucose molecules with the formula (C6H12O6)n. Since it contains oxygen, it is not a hydrocarbon.
The O horizon contains the most organic matter in a soil profile. It is the top layer of organic material such as decaying leaves, branches, and other plant debris that is actively decomposing. The A horizon, also known as the topsoil, is a layer rich in minerals and organic matter that is developed from the decomposition of plant material in the O horizon.
Subsoil
The O horizon contains the most organic matter. The O horizon overlies the A horizon which is known as the mineral horizon. O - organic A - mineral E - elluviation B - illuviation C - parent material R - bedrock This is the order in which you will see standard soil horizons.
ATP
the layer the contain the richest material is the top soil :)
soils have different layers present in it as the depth increases. These layers are called horizons. Humus as we all know is present in the top layer of the soil,which is several inches in thickness and is called A horizon.
A horizon is often darker than B horizon or C horizon because it is the topsoil and the topsoil might be covered with litter. The litter decompose and as you know become soil and it will be fresh soil. So the fresh soil is darker than B and C horizon
most plants grow in the a-horizon
Biological Stress Any activity that puts pressures on living things and threatens to reduce their numbers or range. Although most biological stresses are human-caused, natural activities such as earthquakes or drought are also biological stressors. -www.pima.gov/cmo/sdcp/kids/gloss.html
The Nucleus.
mostly o horizon, but some also occur in the a horizon
The A horizon as it consists of mainly organic matter.