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seraphim [82]
3 years ago
11

HELP ASAP!

Biology
1 answer:
givi [52]3 years ago
7 0

C  The percentage of humus in the soil will decrease.

Explanation:

The percentage of the humus in the soil will decrease if the decomposers that livers in the field dies.

Decomposers are organisms that breaks down organic matter in nature. They are usually a group of micro-organisms that feeds on dead plant and animal matter.

  • Decomposers reduce dead organisms and plant matter into organic matter.
  • Soil is made up of soil air, organic matter, water and rock materials.
  • Soil organic matter is in form of humus in the soil.
  • When decomposers are no longer available in the soil, the organic matter diminishes.
  • The soil will therefore lack humus.

Learn more:

Soil brainly.com/question/2817889

#learnwithBrainly

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The dermis:
Vladimir79 [104]

Answer:

D. is responsible for most of the skin's structural strength.

Explanation:

A. contains no blood vessels.

False. The dermis contains blood vessels together embedded in it along with the sweat and sebaceous or oil glands, hair follicles, and nerve endings.

B. functions as a padding and insulation.

False. The fat layer that is located below the dermis is the one responsible for padding and insulation.

C. is divided into three distinct layers

False. The dermis is divided into only two separate layers. These are the papillary layer or the upper layer and the reticular layer or the lower layer.

D. is responsible for most of the skin's structural strength.

Yes, the dermis functions for providing the skin's structural strength because of it's thick fibrous and elastic tissue layer. This layer consists primarily of collagen and elastin that also allows for the skin's flexibility.

E. is made of epithelial tissue.

False. The dermis is made up of fibrous and elastic tissue. It is the epidermis which is composed of the epithelial tissue.

6 0
3 years ago
Read 2 more answers
A specialized structure within a cell that has its own specific function is known as a/an _______.
vichka [17]

Answer:

Organnelle

Ribosomes

Nucleus

Archaeabacteria

Phospholipid bilayer

Lipases

Explanation:

1. Organnelles are specialized structures in a cell designed to perform a particular function that will make the cell normal e.g. ribosome, Chloroplast, mitochondrion are examples of organnelles.

2. The Rough Endoplasmic Reticulum (RER) is one of the two endomembranous systems in the cell. It is characterized by its rough appearance which occurs as a result of ribosomes attached to its surface. This attachment of ribosomes makes its function related to protein synthesis.

3. Nucleus is a membrane bound organnelle found only in EUKARYOTIC cells. It houses the genetic material (DNA) of a cell and acts as the brain by directing all of the cellular activity of that cell.

4. Archaeabacteria is one of the six kingdoms in the hierarchical classification of living organisms. They contain unicellular and prokaryotic organisms that are uniquely characterized by their ability to survive extreme conditions e.g high temperature.

5. The plasma membrane is an outer covering that bounds the cells of both Prokaryotic and eukaryotic organisms. According to the fluid mosaic model that describes the structure of the cell membrane, it contains a phospholipid layer that confines its selective permeability upon it i.e. ability to control what goes in and out of the cell. This is due to the amphipathic nature of the phospholipid i.e. contains an hydrophobic and hydrophilic region.

6. Lipases are enzymes that are involved specifically in the breakdown of lipids and fat molecules into fatty acids and glycerol.

5 0
3 years ago
What two cell division processes use dna replication.
maks197457 [2]
<h2>The two cell division processes that use DNA replication are mitosis and meiosis.</h2>

7 0
2 years ago
How does E.coli affect a person?ω
Sergio [31]

Answer:

intestinal sickness are called Shiga toxins producing e coli

8 0
3 years ago
Who was responsible for "cracking the code" of DNA by establishing what amino acids are coded for by which codons, and when was
Akimi4 [234]

Answer:

The correct answer is- Nirenberg and Heinrich, 1961.

Explanation:

Experiments by Marshall Nirenberg and Heinrich Matthaei in 1961, began to decipher genetic codes and state about the 64 triplet codons in the genetic code by using mRNA from DNA to translate into specific amino acids in our biological system.

Their experiment helps to decode or crack the code of DNA by establishing the first codon out of 64 triplet codes which are  UUU codes for phenylalanine. In the future, the same approach is used to find other amino acids.

6 0
3 years ago
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