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

Author Question: An important role played by humus in the soil is: a. as a catalyst in chemical reactions by which ... (Read 66 times)

a0266361136

  • Hero Member
  • *****
  • Posts: 538
on: Aug 7, 2018
An important role played by humus in the soil is:
 a. as a catalyst in chemical reactions by which plants extract nutrients from the soil.
  b. as an improver of soil structure and water retention.
  c. as a source of food for microscopic soil organisms.
  d. all of these

Question 2

The ecosystem concept can be applied on almost any scale.
 a. True
  b. False
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cascooper22

  • Sr. Member
  • ****
  • Posts: 312
Reply #1 on: Aug 7, 2018
Answer to Question 1

D

Answer to Question 2

True


a0266361136

  • Member
  • Posts: 538
Reply 2 on: Aug 7, 2018
YES! Correct, THANKS for helping me on my review

carojassy25

  • Member
  • Posts: 299
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Blood coagulation pathways in vivo showing the central role played by thrombin Blood coagulation pathways in vivo showing the central role played by thrombin
Basic chemical structure and synthesis of catecholamines. The synthesis of norepinephrine occurs in ... Basic chemical structure and synthesis of catecholamines. The synthesis of norepinephrine occurs in ...
The structures of the brain that have been shown to play a role in memory. Because it would have ... The structures of the brain that have been shown to play a role in memory. Because it would have ...
a and B Elimination reactions a and B Elimination reactions
Soil Horizons Soil Horizons
Photo of earthworm on soil Photo of earthworm on soil
Video: Pressure Flow Model Animation

For a complete list of videos, visit our video library