« previous next »

Author Question: When several cirque glaciers gauge an individual mountain summit from all sides, a pyramidal peak ... (Read 21 times)

justinmsk

  • Hero Member
  • *****
  • Posts: 524
on: Jul 14, 2018
When several cirque glaciers gauge an individual mountain summit from all sides, a pyramidal peak known as a ________ results.
 
  A) col
  B) horn
  C) hanging valley
  D) artes

Question 2

How have scientists used isotopic analysis to determine the rise of atmospheric CO2 is mostly from the burning of fossil fuels?
 
  A) Since 14C is an unstable isotope, scientists have dated the atmospheric carbon to the period since the Industrial Revolution.
  B) Both coal and oil contain a high proportion of 14C. By analyzing, 14C/12C ratios, scientists have been able to determine the source based on this fact.
  C) The low proportions of 13C and 14C within atmospheric CO2 indicates the source is fossil carbon.
  D) 14C concentrations are much higher in urban areas than in rural areas, indicating fossil fuels must have a higher 14C/12C ratio than carbon from other sources.


laurnthompson

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 14, 2018
Answer to Question 1

B

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Unique markings identify individual humpback whales. Unique markings identify individual humpback whales.
Mountain View Cur Mountain View Cur
Mountain Bongo About 50, Kenya and Gaur About 36,000, Southeast Asia Mountain Bongo About 50, Kenya and Gaur About 36,000, Southeast Asia
Apply oil or lotion with effleurage to both sides of the neck. With recipient faceup, apply oil or ... Apply oil or lotion with effleurage to both sides of the neck. With recipient faceup, apply oil or ...
Tap the head. Apply light fingertip tapotement to the head: top, sides, and back. Tap the head. Apply light fingertip tapotement to the head: top, sides, and back.
Digestion converts whole foods into individual nutrients that can be used by the body’s cells Digestion converts whole foods into individual nutrients that can be used by the body’s cells
Video: Interspecific Competition Relationship - Competitive & Niche Differentiation

For a complete list of videos, visit our video library