This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Over the span of 70 million years, Earth's climate A) was much cooler in the distant past than ... (Read 122 times)

lindiwe

  • Hero Member
  • *****
  • Posts: 577
on: Jul 14, 2018
Over the span of 70 million years, Earth's climate
 
  A) was much cooler in the distant past than the present.
  B) has remained fairly constant, only showing a warming trend during the past 200 years.
  C) was much warmer in the distant past than the present.
  D) was warmest approximately 10 million years ago and coolest about 56 million years ago.

Question 2

In 1974, Dr. Rowland and Dr. Molina made what observation regarding ozone (O3)?
 
  A) Ground-level O3 irritates human eyes and respiratory systems.
  B) Anthropogenic O3 releases were a major culprit in global warming.
  C) The photochemical interactions of chlorofluorocarbons and O3.
  D) Automobile exhaust and sunlight were producing photochemical smog.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Kedrick2014

  • Sr. Member
  • ****
  • Posts: 359
Reply #1 on: Jul 14, 2018
Answer to Question 1

C

Answer to Question 2

C


lindiwe

  • Member
  • Posts: 577
Reply 2 on: Jul 14, 2018
:D TYSM

abro1885

  • Member
  • Posts: 337
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

The Sun is the nearest star to Earth. The Sun is the nearest star to Earth.
Percussing Liver Span, Measuring Liver Span Percussing Liver Span, Measuring Liver Span
President-elect Barack Obama 150 million tiny carbon nanotubes President-elect Barack Obama 150 million tiny carbon nanotubes
The Sun as it appears from the surface of the Earth at Sunset. The Sun as it appears from the surface of the Earth at Sunset.
A typical engine oil cooler. Engine coolant flows through the cooler adjuster that fits between the ... A typical engine oil cooler. Engine coolant flows through the cooler adjuster that fits between the ...
Cyanobacteria from 850 million years ago (Photo 2) Cyanobacteria from 850 million years ago (Photo 2)
Video: Apicomplexan life cycle Animation

For a complete list of videos, visit our video library