How could the urey-miller experiment be changed to accurately reflect our knowledge of the conditions of early earth?
a. add carbohydrate molecules to the water
b. add bacteria to the amino acids
c. add oxygen to the mix of gasses
d. add ultraviolet radiation to the electric current

Weights of golden retriever dogs are normally distributed. samples of weights of golden retriever dogs, each of size nequals15, are randomly collected and the sample means are found. is it correct to conclude that the sample means cannot be treated as being from a normal distribution because the sample size is too small? explain.

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste. the percentage of food that the united states wastes each year is %.

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?