1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lorico [155]
3 years ago
10

Humus represents _____ of the soil composition to 5% b) 60% c) 25% d) 15% e) 50%

Biology
1 answer:
Alex777 [14]3 years ago
7 0

Answer:

The correct answer is B, 60%

Explanation:

Humus, which ranges in color from brown to black, consists of about 60 percent carbon, 6 percent nitrogen, and smaller amounts of phosphorus and sulfur

You might be interested in
Why is DNA’s shape considered a “double helix,” but RNA’s structure is not considered a double helix?
bija089 [108]
Because DNA is shaped in the form two helix combined thus creating a double helix. RNA is not shaped this way, instead it is shaped as a sort of twisted half ladder compared to DNA’s twisted full ladder shape
7 0
3 years ago
Which of the following statements is consistent with the principle of competitive exclusion? Which of the following statements i
Elodia [21]

Answer:

Even a slight reproductive advantage will eventually lead to the elimination of the less well adapted of two competing species.

5 0
3 years ago
1. Describe some of the important observations that Darwin made, both while he was traveling on the expedition of The Beagle and
lions [1.4K]

In Galapagos Charles Darwin Discovered a large amount of birds and reptiles that had developed a sense of isolation from the main land.

Explanation:

8 0
2 years ago
A certain eukaryotic organism has multiple, distinct genes with highly similar sequences that are expressed at different times i
vlabodo [156]

These genes could have arisen by gene duplication.

<h3>What is gene duplication?</h3>

Gene duplication is the process of copying a section of DNA that codes for a gene. A retro transposition event or a recombination mistake are both potential causes of gene duplication. As a result, the duplicate gene coding may experience a significant number of modifications throughout time. This might prevent the gene from functioning or, in other situations, give the creature a benefit.

Gene duplication is a phenomenon that can happen through a variety of ways:

  • Ectopic Recombination: Uneven crossing-over between misaligned homologous chromosomes during meiosis might result in duplications. A duplication at the exchange site and a reciprocal deletion are the results of this recombination.
  • Replication Slippage: Short genomic sequences can be duplicated as a result of the replication error known as replication slippage. DNA polymerase starts copying the DNA during replication, but eventually the polymerase separates from the DNA, causing replication to stall. The replicating strand is incorrectly aligned when the polymerase reattaches to the DNA strand, which accidentally results in several copies of the same portion.
  • Aneuploidy: When a single chromosome's nondisjunction causes an abnormally high number of chromosomes, this condition is known as aneuploidy. Aneuploidy is frequently damaging and frequently causes spontaneous miscarriages in mammals. Some aneuploid people can survive. For instance, human trisomy 21 causes Down syndrome but is not lethal.

Learn more about gene duplication here:

brainly.com/question/14014915

#SPJ4

3 0
1 year ago
Explain how the process of diffusion works in a cell membrane
Deffense [45]
I think it is be division
3 0
3 years ago
Read 2 more answers
Other questions:
  • Select the correct answer. Which two structures of plants and fungi perform similar functions? A. leaves and fruiting body B. st
    14·2 answers
  • Looking through a microscope, you see a cell forming a cell plate during cytokinesis. Which cell are you looking at? A) Human ne
    9·2 answers
  • Prior to c-section surgeries, what outcome would best describe the natural section forces acting on the size of human head? dire
    8·1 answer
  • What unit of measurement is most appropriate for measuring the size of atoms?
    5·1 answer
  • "If a mutation occurs in a gamete, which of the following is most likely to result?
    14·2 answers
  • Why doesnt plants and bacteria expand when it reaches water
    15·1 answer
  • Help help help please please please
    6·1 answer
  • My Activities
    15·1 answer
  • PLEASEEEE HELP MEEE!!!!
    9·1 answer
  • The interdependence of body systems is essential because
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!