All of the following contribute directly to soil formation EXCEPT. A) lichens
B) the erosion of rock by weather
С) the decomposition of organisms
D) volcanic eruptions

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.

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

The response is the basis for vaccination. primary secondary tertiary none of the above