Variations of traits (characteristics) in a population are due to

Nucleic acid certain protein cell membranes certain carbohydrates

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

The ruiz family is exchanging euros for us dollars. the exchange rate is 1 euro equals 1.35261 usd. since the ruiz family knows that usd are stated to the nearest hundredth of a dollar, they used the conversion ratio