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i hope that you're thinking about hormones.

as for actual messengers, there's about a thousand of which we have names for about a hundred.

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17y ago

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How do you treat lime tree for aphids?

Introduction of and support for natural predators and use of botanical and chemical controls are ways to treat lime trees for aphids. Treatment by natural enemies focuses upon such voracious aphid-eaters as ladybugs and syrphid flies. Botanical controls include horticultural oils against eggs and insecticidal soaps against immature and mature stages whereas chemical controls at their eco-friendliest list as active ingredients pyrethroids.


Who controls a tornado?

Nobody controls a tornado; it is a natural event.


Is the smell of natural gas a chemical property?

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What is a factor that controls Natural selection?

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It depends on what specific part. Or what object is wearing but generally it is called weathering or erosion. Weathering can be either chemical or natural. ;)


What is the chemical name for natural gas?

The chemical name for natural gas is methane (CH4).


Who controls natural resources in a command economy?

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What natural phenomenon is controlled by Aeolus?

Aeolus controls the winds.


Is chemical an example of natural force?

A chemical compoud or a chemical reaction are not forces.


What are the chemical pr?

Pr is the chemical symbol of the natural chemical element praseodymium.


How is non-organic food grown?

It is with the preferential use of chemicals over non-chemical controls that non-organic food is grown.Specifically, organically grown food is produced in adherence to specific ways of producing edibles. Its production opts for biological and natural treatments, with strong emphases upon the well-being of the plant in question but also of the soil in which it grows and the soil food web with which its roots share space underground. In contrast, non-organically grown food tends to be produced with attention to regular fertilization schedules -- which emphasize nitrogen, phosphorus and potassium over other nutrient needs -- and non-natural controls, such as chemical, conventional, synthetic pesticides.


What can you get to destroy honey bees?

Cultivating wind-pollinated plants, degrading habitats, encouraging natural enemies, following chemical treatment schedules, getting professional exterminators, holding controlled burns, and increasing environmental pollution are controls which can be obtained to destroy honey bees. The above-mentioned controls function as extreme methods which are guaranteed to decrease honey bee populations at best and eliminate them at worst. But who wants to do that to one of the world's beneficial insects, generous honey-producers, and lavish pollinators?