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Strains of the bacterium Staphylococcus aureus have developed which are resistant to several types of antibiotic. Scientists have named these strains MRSA. These strains have developed as a result of...?

The answer is natural selection. you have a colony of the bacterium and one bacterium develops a mutation which allows it to become resistant to some types of antibiotics. the bacteria that dont have the...

Answered by Sai Sumathi P. • Biology tutor

2198 Views

Animals and plants have features (adaptations) that allow them to survive in the conditions in which they normally live. Describe how animals and plants are adapted to survive in dry conditions such as deserts. For each adaptation that you give, describ

Species that live in desert habitats, where water is scarce, have adaptations to conserve water and cope with the sandy terrain. A good example is the cactus which has thin spines intead of leaves, this r...

Answered by Lorna W. • Biology tutor

7951 Views

Explain why graphite can conduct electricity.

Graphite is structured as layers of carbon atoms arranged in 6 atom planar rings. Each carbon atom forms three bonds to neighbouring atoms meaning that each eatom has an unbonded alectron. This unbonded e...

Answered by Lorna W. • Chemistry tutor

4996 Views

What is the difference between capital expenditure and revenue expenditure?

Revenue expenditure is monies spent on the day-to-day running of a business whereas capital expenditure is monies spent on the purchase of or addition to a non-current asset. The cost of revenue expenditu...

Answered by Christina W. • Accounting tutor

8284 Views

Explain the difference between the domain and range of a function.

The domain is the set of values you can put in for x. And the range is the set of vaules you get out of the function. On a graph f(x) against x, the difference in x value...

Answered by Charlotte P. • Maths tutor

3898 Views