31) 99 percent of the UV radiation that the sun : 1381010

31) 99 percent of the UV radiation that the sun : 1381010.



31) About 99 percent of the UV radiation that the sun showers on Earth is blocked by:

A) stratospheric ozone.

B) stratospheric greenhouse gases, such as CO2 and water.

C) the magnetic fields that surround the Earth.

D) tropospheric greenhouse gases, such as CO2 and water.

E) ground level ozone.


32) The “ozone hole” is caused by the:

A) buildup of toxic ozone in the troposphere over cities such as Los Angeles from human-caused pollution.

B) depletion of ozone in the troposphere by chemicals such as CFCs.

C) depletion of ozone in the stratosphere by chemicals such as CFCs.

D) increase in warming due to high levels of ozone in the troposphere.

E) depletion of ozone in the troposphere due to greenhouse gases.


33) CO2 is a greenhouse gas because it:

A) increases the heat capacity of the stratosphere.

B) increases the reflection of short-wave energy from the sun.

C) traps long-wave heat energy near Earth’s lower atmosphere.

D) traps short-wave energy near Earth’s lower atmosphere.

E) causes the destruction of ozone in the near-surface atmosphere.


34) Which major problem for land-based ecosystems would result from global warming?

A) A rise in sea levels would drive in competitors.

B) A danger would result for species that cannot migrate in response to habitat change.

C) The excess CO2 could be lethal.

D) Increased fire danger would result in northern United States and Canada.


35) Ecosystems in the United States experience seasonality because:

A) Earth is tilted with respect to the orbit around the sun.

B) the rotation of Earth causes a rhythmic circulation of Earth’s atmosphere.

C) Earth rotates on it’s axis relative to the sun.

D) there is a predictable seasonal solar activity cycle.

E) Earth is closer to the sun in summer and farther away in winter.

36) The “rain shadow” effect occurs because:

A) cloud shadows move from east to west, dropping moisture on the east of mountain ranges in the northern hemisphere.

B) cool air masses warm as they move closer to the sun, dropping moisture on the west side of mountains.

C) air cools as it rises and drops most of its moisture on one side of the mountain, and then mostly dry air moves to the other side of the mountain.

D) clouds don’t drop moisture over mountain chains.

E) precipitation patterns follow the tilt of Earth’s axis.


37) At about 30 degrees north and south of the equator there are dry regions on Earth. Why?

A) Warm air rises and evaporates, leaving dry, cool air with no clouds.

B) Cool air falls, is warmed, and absorbs moisture.

C) Warm air falls and absorbs moisture as it cools near the surface.

D) Cool air rises, and water condenses.

E) Air flows laterally across the land from the temperate zone.


38) Earth is generally hotter at the equator because:

A) the sun shines over the equator evenly through the year, rather than seasonally.

B) Earth’s rotation on a tilted axis increases seasonality.

C) the natural oval shape of Earth places the equator nearer the sun than the poles.

D) the Earth receives the most direct sunlight over the course of the year at the equator.

E) Earth’s rotation on a tilted axis creates an atmospheric drag at the equator, warming the air.


39) Which of the following best describes a biome?

A) large terrestrial regions with similar climate and similar types of plant life

B) small terrestrial regions with similar climate and the similar communities of organisms

C) three different classes of ecosystems based on high, medium, or low rainfall

D) three different classes of ecosystems based high, medium, or low temperature


40) Tundra is characterized by:

A) low rainfall, deep water penetration, and trees with a vibrant understory of moss.

B) high rainfall, slowly growing trees, and low temperatures.

C) low rainfall, coniferous trees, and permafrost.

D) low rainfall, dry soils, and permafrost.

E) low rainfall, seasonally wet soils, and permafrost.


31) 99 percent of the UV radiation that the sun : 1381010

Get a Quick Quote

Approximately 250 words
Total price (USD) $: 10.99

Let us do the hard and easy stuff in nursing for you

Find an experts in Nursing Papers and kickstart your grades today with NursingPapersLib.com

Best nursing assignment writers

It is easy to promise the availability of help with nursing assignments but without the best nursing assignment writers in the industry, such promises can turn out to be hot air. Our expert nursing writing services feature seasoned professionals who have been providing nursing writing help and consultation services for a long time. Irrespective of the year of study or practice students are involved in, the best nursing assignment writers know the nuances of nursing student’s needs. There is no better way to assure you of the best nursing writing services than providing nursing writing help from peers who are ahead of you and have only the best interests at heart. Only the best nursing assignment writers will handle your request for the best nursing writing service because your communication can get through to them. Knowing the potential nursing writing help that you seek from the way you frame your request is the hallmark of a writer who provides expert nursing writing services. This is because, with their knowledge, there is likely less room for misunderstood requests when you are seeking the best nursing writing service you need.

How it Works

Place an Order

Provide your contact information, select an order type, and describe your requirements. This isn’t going to take long!

Image showing step 1 of making an order
Image showing how to make payment for your order

Select an Appropriate Writer

We’ll match your specifications with our available authors after we have all of the relevant information concerning your order.

Image showing how to download your completed results

Enjoy the End Product

One of our specialists will fulfill your purchase according to your specifications so that you are happy with the end result.

Why Choose us?

Free Revisions

We understand that not always out tutors could catch all details required which arises a s a result of miscommunication or inadequate information provided. However, we are always eager to provide you with free revisions till we get it right with your Nursing Papers.

Quality Non-plagiarized Nursing Papers

Our Professional Team of Nursing Writers always adhere to quality standards and plagiarism policy. Furthermore, we employ Quality Control Tools to ensure you get Custom Written Nursing Paper. Every paper is reviewed by an independent editor for syntax errors before submission

Professional Nursing Writers

At NursingPapersLib.com, we specialize in Nursing Homework Help Services only. Thus, this allows us to cater to our nursing students and get high qualified nursing tutors who will deliver exceptional results in nursing papers

Flexible Pricing

We always endear to provide best prices that matches our quality and your budget. This is why we provide a pricing mechanism based off several factors such as length, level of education and type of assignment. our pricing are highly competitive across the industry standard prices.