Livestock is an expensive source of food because: A. it is particularly rich in protein B. of the amount of land area needed to house the animals C. the antibiotics and hormones needed to support a high yield of flesh are very expensive D. it is the preferred food source in many developing nations E. animals are very inefficient at converting plant food into meat

Rue or false siblings look simila rbecause they each have some traits of their parents.

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

Put the following processes of protein synthesis in the correct order: - dna strands unwind and separate - mrna copies dna according to complimentary base pairing - trna's anticodons bring amino acids to the corresponding mrna codons - amino acids bind to each other making a protein - mrna leaves the nucleus - a stop codon is reached, the newly formed protein is released to go do its job for the cell