Answer:
Water earth fire and rain hurricanes fire tornados etc
Explanation:
There are millions of physical conditions but that's the only ones I could think of.
The exoskeleton of an arthropod is chitin.
The answer is d. the ability to transmit light; for example, air
Transparency means allowing light to pass through the material. Thus, the transparent material must be able to transmit light. Air is transparent. It is a gas containing very few atoms, so light run into few of them and thereby air looks transparent.
Answer:
Instead, polygenic traits exhibit incomplete dominance so the phenotype displayed in offspring is a mixture of the phenotypes displayed in the parents. Each of the genes that contributes to a polygenic trait, has an equal influence and each of the alleles has an additive effect on the phenotype outcome.
Explanation:
Biomass is the most used renewable source of energy in US in the year of 2009.
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In US, the country is very cold and use of wood and other plant products as chimney fuels, or in cooking and other purposes are very common. This is because being a temperate country, US has forests of conifers which are source of soft wood, ideal for burning.
Other sources of Biomass energy comes from the biogas, wood wastes, ethanol, municipal solid wastes and even biodiesel.
As a present day scenario, although coal and petroleum are still the most used fuels in US, but the use of renewable sources of energy has increased to twice the amount from 2010 to 2018.