1. The correct answer is A. silicone.
Silicone is also referred to as polysiloxanes. They are termed as polymers which include any inert. It is a synthetic compound which is made up of repeating units of siloxane. They are heat resistant and rubber-like. They are used in medicine, lubricants, cooking utensils, and electrical insulation.
2. The correct answer is C. Formulating the mix.
It is a way of marketing. There is no formula for multi-channel marketing. The most effective nowadays is multichannel and integrated.
3. The correct answer is B. humus.
Humus is termed as the dark organic matter which forms in the soil when dead plants and animals matter decays. It has a lot of nutrients which helps to improve the health of the soil and most important is the nitrogen. It affects the bulk density of soil which contributes to its retention of nutrients and moisture.
4. The correct answer B. Sweet.
The red soil is described by sweet. Sweet is something which smells good. Red soil develops to temperate, warm, moist climate which is under mixed forest. It has a thin organic and inorganic mineral layer. They are derived from crystalline rock.
5. The correct answer is B. Casting with sulfur.
Sulfur casts have both sides which have the same cast as the original.
He was studying genetics by performing mating crosses in pea plants. Then, he discovered that the traits in the offspring didn't always match the traits in the parental plants.
Carbon and hydrogen.
The simplest group of organic molecules are the alkanes which have only these 2 elements. Eg methane, CH4.
Fossils can show structural similarities and differences in organisms over time revealing the vast diversity of life forms that have and continue to exist on Earth.
Comparisons between living organisms and fossils also allow scientists to make inferences about the lines of descent.
Answer: Symptoms of potassium deficiency appear on the lower portion of the plant first with chlorosis (yellowing) at the leaf margins followed by necrosis (death). Potassium deficiency can be caused by soil pH, extreme liming or calcium rich areas of fields, lack of soil oxygen or true soil deficiency.
