Give two examples each for conduction, convection, and radiation.
Conduction - heating a tin can with the use of a bunsen burner, a cold iron skillet placed on a stovetop which is hot
Convection - boiling of water, hot air balloon
Radiation - UV from the sun, x-rays from an x-ray equipment
Find out whether combustion reactions are exothermic or endothermic, and explain why.
Combustion reactions are exothermic reactions since they always produce or release heat. The reactants would always have more energy than the products which causes the excess heat to be released.
<span>Find a substance that has a specific heat that is higher than liquid water and explain what it means.
The substance which has a higher heat capacity than water would be the hydrogen gas. It has a heat capacity of 13.83 kJ/kg K. Having a higher heat capacity would mean that it requires more heat energy in order to increase the temperature as compared to water.
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mutations caused by factors in you environment
mitosis may cause new genetic combinations
replication errors
Yes this is true, organic compounds, that are carbon containing can form straight chains, branch chains, or rings, many different kinds of structures.
The mineral-based pigment called Ochre was used by early modern Homo sapiens to color many artifacts and features.
It was used by early modern homo sapiens to color many artifacts and features. This is the most common use by modern humans, especially archaeologists, as any iron rich rock that can be used as a pigment.
The two effects of dividing food-gathering labor, the camp and the dependence of the gender on each other beyond reproduction, were the first great steps toward modern human culture. Sharing of resources and its concomitant division of labor led to a divergence in both the biological and cultural evolution.
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