[Answered] A ventilation problem may exist when the carbon dioxide level in a room exceeds ____

This topic contains a solution. Click here to go to the answer

Author Question: A ventilation problem may exist when the carbon dioxide level in a room exceeds _____. a. 500 ppm ... (Read 14 times)

ap345

Hero Member
Posts: 537

on: Jul 24, 2018

A ventilation problem may exist when the carbon dioxide level in a room exceeds _____.

a. 500 ppm
b. 600 ppm
c. 800 ppm
d. 1,000 ppm

Question 2

The most common source of radon is uranium in _____.

a. soil and rocks
b. well water
c. industrial emissions
d. nuclear waste

Need homework help now?

Ask unlimited questions for free

Ask a Question

Marked as best answer by a Subject Expert

Galvarado142

Sr. Member
Posts: 348

Reply #1 on: Jul 24, 2018

Answer to Question 1

d

Answer to Question 2

a

ap345

Hero Member
Posts: 537

Reply #2 on: Jul 24, 2018

Both answers were spot on, thank you once again

Galvarado142

Sr. Member
Posts: 348

Reply #3 on: Jul 24, 2018

Great! Please up vote

« previous next »

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.