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Explain the concept of natural selection. Give an example.

Natural selection is a theory that became popular after Charles Darwin work and states that traits of living organisms are selected according to their ability to adapt to the environment. It implies that eve...
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Answered by Jessica F. • Biology tutor
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Cite examples of biotic and abiotic factors that influence living organisms in an ecosystems.

Abiotic: temperature, rainfall, oxygen, nutrient availability Biotic: competition and predation between species, migration
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Answered by Jessica F. • Biology tutor
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What are biofuels? Give names of at least two biological sources.

Biofuels are fuels made from organic biomass, i.e., plant material. Sugarcane and sugar beet are sources of biofuels.
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Answered by Jessica F. • Biology tutor
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How are enzymes involved in digestion?

Enzymes are involved in chemical digestion. When nutrients are ingested there are many different sized molecules across the various food groups. Some of these molecules are already small enough to be absorbe...
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Answered by Ella P. • Biology tutor
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What do you understand by gene cloning?

Gene cloning refers to a process in which a gene of interest is ligated to a vector. The recombinant DNA thus produced is introduced in a host cell by transformation. Each cell gets one DNA molecule and when...
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Answered by Harkeran J. • Biology tutor
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