Biology, 22.11.2019 07:31, jujucruz6

1.which of the following is not a major component of soil
a. mineral matter
b. air
c. humus
d. earthworms

2.a soils texture is determined by
a. mineral composition
b. type of humus
c. water content
d. particle size

3.the main source of organic matter in soil is
a. water
b. plant
c. fungi
d. bacteria

Answers: 1

Show answers

Answers

The correct answers are as follows:
1. D.
Earthworm is not a major component of the soil. The major components of the soil refers to those materials which combine together to form soil. Examples of components of the soil are water, air, humus, etc. An earthworm is an animal which live inside the soil; it helps the soil by promoting the aeration of the soil.
2. D.
The particles that made up a soil determine the soil texture of that soil. Soill texture refers to the relative contents of the particles of various sizes which are find in a particular soil. Soil texture affect the amount of water a soil can hold and the ease with which the soil can be worked.
3. B.
The main source of organic matter in the soil is plant. Dead plants fall down to the ground and are worked upon by microbes which decompose them and turn them to humus. Humus is the major organic content of the soil and the fertility level of a soil depends on the amount of humus it contains.

answered: Guest

The answer is going to be a because ik that i’m right

answered: Guest

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.