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
Elina [12.6K]
3 years ago
6

Disadvantages of normal floras​

Biology
1 answer:
inn [45]3 years ago
3 0
It has a lot of advantages as well as disadvantages; but they prevent or suppress the entry of pathogens; colonies produced by some organisms of normal flora have a harmful effect on the pathogens; endotoxins liberated by normal flora may help the defense mechanism of the body. (Make me the brainless please)
You might be interested in
Active transport requires energy because it usually involves the movement of
hram777 [196]

Answer:

D

Explanation:

When a substance moves from low to high concentration it is moving against its concentration gradient, which requires more energy.

A. It depends on where it is moving, not the substance

OB. This is describing diffusion

OC. Does not require energy, it is passive transport through a semi-permeable membrane

6 0
3 years ago
Coral reef ecosystems support over a million different species. please select the best answer from the choices provided t f
a_sh-v [17]

This answer would be true, b/c it is not false. It's not false b/c coral reef ecosystems <em><u>DO</u></em> support over a million different species.

4 0
3 years ago
Read 2 more answers
The population in South Africa is more prone to sickle cell anemia (genotype "ss"). People with genotype "ss" survive only up to
lions [1.4K]
The answer is stabilizing selection.

<span>Sickle-cell anemia is a recessive disorder caused by the presence of two recessive alleles "s", so genotype is "ss". This disorder is characterized by sickle hemoglobin. In an area with malaria, heterozygous individuals "Ss" (with one dominant allele and one recessive allele) have an advantage. These individuals will have both normal and sickle hemoglobin. But pathogen that causes malaria affect only normal hemoglobin, so heterozygous individuals will have half of the hemoglobin resistant to the pathogen and those individuals are resistant to malaria.</span>

Stabilizing selection favors heterozygotes Ss,  disruptive selection favors dominant (SS) and recessive (ss) homozygotes, while directional selection favors dominant (SS) or recessive (ss) homozygote. Since in this example, people with genotype Ss (heterozygotes) are in advantage, then this is an example of stabilizing selection.

7 0
3 years ago
Hey <br> How do you take good notes? and study them
rosijanka [135]

Answer:

i don't really take notes sorry

Explanation:

8 0
2 years ago
Changes in the plant species in an area cause changes to populations of animal species in the area too. Propose a reason why thi
aev [14]
Because animals need food dumas
3 0
3 years ago
Other questions:
  • The temperature-volume relationship shown in the graph in the lesson represents: 1. an inverse linear function
    9·2 answers
  • In nature during 24-hour period what substance do green plants continuously use
    15·2 answers
  • If your blood sugar level is low from skipping lunch what reaction will occur in your liver cells
    10·2 answers
  • Define trawling, and explain the ecological damage associated with it.
    15·2 answers
  • A frustrated 26-year-old female has sought a referral to a dermatologist in an effort to resolve her sweating and body odor whic
    11·1 answer
  • Can you help me find the right word of the sentence!
    15·1 answer
  • A clown fish gets protection from a sea anemone and the sea anemone gets
    9·2 answers
  • In which process do animals turn food energy into a form their bodies can use?
    6·1 answer
  • A skin cell should generate an exact copy of itself. Through which process would this occur?
    12·2 answers
  • What are the resources of the ocean
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!