« previous next »

Author Question: An ecosystem is an example of a(n) _______________ system, because energy and matter are freely ... (Read 33 times)

shenderson6

  • Hero Member
  • *****
  • Posts: 573
on: Jul 13, 2018
An ecosystem is an example of a(n) _______________ system, because energy and matter are freely exchanged at its boundaries.
 
 
 
 Fill in the blank(s) with correct word

Question 2

Earth moves around the sun in a perfectly circular orbit.
 
 
 
 
  Indicate whether the statement is true or false


recede

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 13, 2018
Answer to Question 1

open

Answer to Question 2

F


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

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?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Relative Energy Consumption per Person for Selected Countries Relative Energy Consumption per Person for Selected Countries
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
Using a water-based cleaning system helps reduce the hazards from using strong chemicals. Using a water-based cleaning system helps reduce the hazards from using strong chemicals.
Landsteiner's experiment demonstrating the exquisite specificity of the immune system. Landsteiner's experiment demonstrating the exquisite specificity of the immune system.
Radiative forcing expresses change in energy input over time Radiative forcing expresses change in energy input over time
Muscular system Muscular system
Video: What are Taste Receptors? How Does it Work? Animation

For a complete list of videos, visit our video library