Q: Q: How many major forces of elevation cause allele frequencies to change? Choices: - one - five - three - four A:
A: four

Q: Q: What living things are considered photoautotrophs because they use sunlight and carbon from carbon dioxide to synthesize chemical energy in the form of carbohydrates? Choices: - protazoa - bacteria - moulds - plants A:
A: plants

Q: Q: Many species secrete a hard external skeleton of what? Choices: - sodium bicarbonate - hydrogen carbonate - carbon dioxide - calcium carbonate A:
A: calcium carbonate

Q: Q: What generally sets the direction that technology takes? Choices: - local animals - local weather - random chance - problems of society A:
A: problems of society