Which one of the following soil horizons is least likely to interact directly with living organisms?
A) A horizon
B) O horizon
C) E horizon
D) C horizon
Question 2
Entering a new job at a small medical testing facility, Ben is cautioned to handle certain chemicals carefully. Wondering what harm some of these chemicals can potentially cause, Ben asks a coworker.
The coworker says, Well, I think they can cause cancer if you breathe the fumes. Ben wants to be certain. According to OSHA guidelines, Ben should A) read the relevant material safety data sheets.
B) search the Internet for medical articles related to these compounds.
C) ask the supervisors about the dangers of the substances he handles.
D) check the information on the HAZMAT signs in his workplace.
Antifreeze in living organisms
Solar particles interact with Earth's magnetosphere. Sizes not to scale.
Living in Space
In pretend play, toy figures and animals “come to life” and interact with each other.
Working and Living and Playing in the City Dump of Phnom Penh, Cambodia
Soybean plants in nitrogen-poor soil show how root nodules affect growth. Only the darker green plan