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

Author Question: In a modern society, approximately what percentage of human energy is used to produce food? A) 10 ... (Read 90 times)

schs14

  • Hero Member
  • *****
  • Posts: 569
on: Aug 27, 2018
In a modern society, approximately what percentage of human energy is used to produce food?
 
  A) 10
  B) 25
  C) 45
  D) 65

Question 2

Which of the following statements about ethylene and polyethylene is true?
 
  A) The polymer has the same properties as the monomer.
  B) The polymer has alternating double and single bonds between carbons, while the monomer has only single bonds between carbons.
  C) The polymer has alternating double and single bonds between carbons, while the monomer has only double bonds between carbons.
  D) The polymer has only single bonds between carbons, while the monomer has only double bonds between carbons.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

maaaaaaaaaa

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

D


schs14

  • Hero Member
  • *****
  • Posts: 569
Reply #2 on: Aug 27, 2018
TY


maaaaaaaaaa

  • Sr. Member
  • ****
  • Posts: 336
Reply #3 on: Aug 27, 2018
You're welcome


« previous next »
 

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?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Movement of a bolus of food from the mouth to the esophagus. The bolus then travels to the stomach. Movement of a bolus of food from the mouth to the esophagus. The bolus then travels to the stomach.
Lateral View of the human brain in cross section Lateral View of the human brain in cross section
Parts of human nervous system Parts of human nervous system
Major glands of the human endocrine system Major glands of the human endocrine system
Some scientists believed that langur infanticide was influenced by human disturbance. Some scientists believed that langur infanticide was influenced by human disturbance.
Radiative forcing expresses change in energy input over time Radiative forcing expresses change in energy input over time
Video: Component of feedback systems & Communication and regulation of body systems

For a complete list of videos, visit our video library