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
SVETLANKA909090 [29]
2 years ago
11

Which of the following is a major benefit of commercial agriculture? O A. Loss of habitat B. Overconsumption of water C. Product

ion of primary food crops O D. Synthetic fertilizers​
Biology
1 answer:
zavuch27 [327]2 years ago
4 0

Answer:

C.  Production of primary food crops

Explanation:

Loss of habitat and overconsumption of water are big drawbacks of commercial agriculture.  Synthetic fertilizers tend to be necessary with commercial agriculture, but they are heavy polluters and tend to destroy waterways, so they are a big drawback of commercial agriculture.

You might be interested in
What are the effects of soil salinization most likely to be seen
AnnyKZ [126]

The correct answer is C

8 0
2 years ago
Read 2 more answers
Which of these is NOT an example of a pure substance? A a tablet of the element known as calcium
11111nata11111 [884]

Answer:

a glass of muddy water

Explanation:

Pure substances contain only one element or compound.

Calcium is one element so it is a pure substance. Ice and water have the same molecular structure, so it is a pure substance. Aluminum oxide is a chemically pure compound.

The only example that is not a pure substance is muddy water due to the multiple components of mud mixing with the components of water.

Hope that helps.

7 0
3 years ago
The retinoblastoma protein, pRB, is a tumor-suppressor protein that controls the G1/S cell-cycle checkpoint. While pRB is presen
gladu [14]

Answer:

1. pRB phosphorylated: The cell will not remain in G1 phase i.e. it will enter S phase because pRB will be degraded.

2. pRB not phosphorylated: The cell will remain in G1 phase i.e. will not enter S phase because pRB will remain bound to E2F.

3. pRB bound to E2F: The cell will remain in G1 phase i.e. will not enter S phase.

4. pRB not bound to E2F: The cell will not remain in G1 phase i.e. it will enter S phase.

5. E2F bound to DNA: The cell will not remain in G1 phase i.e. it will enter S phase.

6. CDK4 bound to Cyclin D1:  The cell will not remain in G1 phase i.e. it will enter S phase.

Explanation:

Retinoblastoma protein, pRB supresses tumor by regulating cell cycle progression in G1 phase. When a transcription factor known as E2F is bound to pRB the cell remains in G1 phase and did not proceed further to enter S phase. But as soon as pRB becomes phosphorylated, E2F becomes free and causes gene expression of cyclin E and and cyclin A which are required in progression of cell cycle from G1 phase to S phase.

<u>Signaling involved in cell cycle progression from G1 phase to S phase. </u>

When a cell is unstimulated, pRB is bound to E2F but G1 phase specific growth factors induce the expression of cyclin D through Ras-MAP kinase pathway.

Synthesis of cyclin D leads to the activation of CDK-4 which is a serine-threonine kinase. This kinase causes phosphorylation of pRB which results in the degradation of pRB.

Because of degradation of pRB, <u>E2F becomes free</u> and leads to the expression of cyclin E and and cyclin A which are S phase specific cyclins. This is how cell progresses from G1 phase to S phase.

E2F is a transcription factor which causes expression of S phase specific cyclins i.e. cyclin E and and cyclin A. So, E2F bound to DNA will result in cell cycle progression from G1 phase to S phase.

7 0
3 years ago
Why is there more than one single locus probe used in actual paternity DNA test?
Firlakuza [10]
I believe this is done to ensure accuracy.  DNA paternity testing involves the use of DNA profiling to determine whether two individuals are biologically parent and a child. The test establishes genetic proof whether a man is the biological father of the individual in question. There is need for use of more than one loci probes to make sure there is no error and that the results are 100% accurate.
6 0
3 years ago
Read 2 more answers
_______ is a condition that is characterized as long, narrow trunk, short limbs, and a large head. down syndrome turner syndrome
kozerog [31]
ACHONDROPLASTI DWARFISM is a condition that is characterized as long, narrow trunk, short limbs and a large head. It is the most common type of dwarfism and it occurs in about 1 out of 40.000 babies. Other features of the condition include: protruding jaw, flattened bridge of the nose, forward curvature of the lower spine and bow legs.
7 0
3 years ago
Other questions:
  • What's forms a belt between mars and jupiter
    5·1 answer
  • Which of the following statements is true?
    8·2 answers
  • What is the science specifically concerned with the study of humans?
    6·1 answer
  • What are the Autotrophs in an Owl Food Web?
    7·1 answer
  • Kim knows that today’s lab investigation will involve heating liquids over an open flame. Which apparel choice would indicate th
    7·1 answer
  • which of the following human activities most likely result in the growth of the north America deer population
    13·2 answers
  • What has happened to the Argentine ants in San Diego county?<br>plz help me asap
    12·1 answer
  • Points give a answer
    15·2 answers
  • Describe an example of an endothermic and exothermic reaction. For each of your reactions, identify whether it is a physical or
    11·2 answers
  • Pioneer species are species which colonize previously uncolonized land, usually leading to ecological succession. They are the f
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!