Where does most exogenous antigen presentation take place?

Aquifers are deep (blank) rivers or caves that filter and store freshwater

If the average human colon weighs 220 grams, how many bacteria live in each person's colon? if there are 6.7 billion people on earth, what is the total number of bacteria that live in human colons around the world? answer

What weather factor is also a measurement of energy held within the air? A. Humidity B. Pressure C. Temperature D. Wind

What is the medical term that denotes fungal skin disease?

Which process is the first step of protein synthesis? A. Transcription B. Replication C. Conjugation D. Translation

Aquaculture cannot reduce the number of fish caught in the wild. a. True b. False

Why does the reporter have a tube up his nose? to accurately measure core temperature True or False

Charles Goodyear was a scientist who was looking for ways to keep rubber from melting in the summer heat and becoming brittle in the winter cold. He discovered the solution by accident when someone left a sample of rubber and sulfur on the stove.

Discuss why scientists know so little about Precambrian Earth

If two elements are in the same chemical family then what can be predicted about their Spectra