« previous next »

Author Question: What is one disadvantage of a retractable roof greenhouse? What will be an ideal ... (Read 16 times)

mynx

  • Hero Member
  • *****
  • Posts: 555
on: Jul 22, 2018
What is one disadvantage of a retractable roof greenhouse?
 
  What will be an ideal response?

Question 2

When is a staged controller more practical than thermostats?
 
  What will be an ideal response?


flannelavenger

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 22, 2018
Answer to Question 1

A single covering is used on the greenhouse that looses more heat than
double roof coverings.

Answer to Question 2

1) When a signal from a single sensor such as temperature is used to
activate several stages of response, such as 2 stages of heating and 3 stages of
cooling. 2) When signals are received from more sensors than just a temperature
sensor.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

The greenhouse effect: heat trapping by earth's atmosphere. The greenhouse effect: heat trapping by earth's atmosphere.
The Number of Children Americans Think Are Ideal The Number of Children Americans Think Are Ideal
Greenhouse gases increase in the stratosphere Greenhouse gases increase in the stratosphere
A close relationship between greenhouse gas emissions and a country’s gross domestic product A close relationship between greenhouse gas emissions and a country’s gross domestic product
Land use change and forestry are responsible for 18% of global greenhouse gas emissions Land use change and forestry are responsible for 18% of global greenhouse gas emissions
Under ideal conditions, a single cell of the bacterium E. coli would divide every 20 minutes to ... Under ideal conditions, a single cell of the bacterium E. coli would divide every 20 minutes to ...
Video: Transferring genes into plants Animation

For a complete list of videos, visit our video library