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
scZoUnD [109]
4 years ago
8

All animals have a system for exchanging carbon dioxide and oxygen with their surroundings. What do all of these systems have in

common?
A. All involve the active transport of gases across membranes.
B. All include airways, such as the trachea, that carry air to the mouth.
C. All involve gas diffusion across moist, selectively permeable membranes.
D. All involve organs or tissues that are dedicated to gas exchange and fulfill no other functions.
Biology
1 answer:
pantera1 [17]4 years ago
8 0

Answer:

A.All involve the active transport of gases across membrane

You might be interested in
Help please!
Jet001 [13]
C) coyote is your answer.

The food web works as:

producers, primary consumers, secondary consumer, tertiary consumers.

Tertiary consumers are made up of mostly carnivore animals (and some omnivores, like humans).


hope this helps

7 0
3 years ago
Read 2 more answers
Why is my male reproductive organ so big?
Bumek [7]
Is your testicles swollen ? You should go see a doctor. Especially if there’s pain.
7 0
3 years ago
Read 2 more answers
What blood condition is caused by iron deficiency?
Dmitry [639]
Answer is Anemia, which is the absence of a good portion of red blood cells.
5 0
3 years ago
The color of the mustard plant in Lab 4 (Natural Selection) was determined by a single gene with two alleles (Y or y). The Y all
Scorpion4ik [409]

Answer and Explanation:

It occurs evolution whenever the allelic frequencies in the genic pool change. If the population is not in Hardy-Weinberg equilibrium, it is because one, some, or several of the model's assumptions are not met. If we want to know if a population is evolving, we must observe the frequencies of the population, and if they change over time. If there is a change, it might also be reflected in the phenotypic frequencies.

In the exposed example there was an evident change in the population genetic frequencies.

<em>1) Genotype frequencies</em>: YY = 0.5; Yy = 0.25; yy = 0.25

<em>Genic or Alleleic frequency</em>:

  • Frequency of y= f(q)= √0.25 =0.5
  • Frequency of Y= f(p)= 1- 0.5 =0.5

<em>2) Hardy-Weinberg Frequencies</em>: YY = 0.30; Yy = 0.56; yy = 0.14

<em>Genic or Alleleic frequency</em>:

Frequency of y= f(p)= √0.14 =0.374

Frequency of Y= f(p)= 1- 0.5 =0.626

The allelic frequencies and hence the genotypic frequencies changes, so we can assume that there was evolution.                                          

5 0
3 years ago
Characteristics of chancroid include:
Musya8 [376]

The sexual transmission of Chancroid is one of its characteristics.

The main method of transmission for patients in the United States is sexual contact, and the identification of chancroid ulcers in babies and children, particularly in the genital and otherwise perineal area, is incredibly suspect of sexual abuse.

The bacteria Haemophilus ducreyi causes chancroid, which causes painful, superficial sores and frequently also causes regional lymphadenopathy. Chancroid is a common condition that can spread HIV and is seen in Asia, Africa, as well as the Caribbean. The chancroid-caused vaginal ulcer is painful, sensitive, and uninsured.

3 - 7 days after the infection, symptoms appear. Small, uncomfortable blisters that develop around the anus or on the genitalia quickly burst into ragged-edged, shallow, open sores.

To know more about bacterial infection at

brainly.com/question/12669540?referrer=searchResults

#SPJ4

3 0
1 year ago
Other questions:
  • Urban areas tend to be warmer than the rural areas that surround them. This is mainly caused by how the materials that humans us
    12·2 answers
  • I do not understand because I was not in class. Can you please help me answer these questions.
    14·1 answer
  • Salt water is classified as a
    10·2 answers
  • I’ll mark as BRANLIEST!!!
    8·1 answer
  • What is the name of the groove that forms in the middle of a dividing plant cell
    6·1 answer
  • Plz help me I don’t know the answers
    10·1 answer
  • What tree things cause abrasion
    15·1 answer
  • Explain in 5-7 sentences.
    12·1 answer
  • . Explain how the mouse population might be affected if the owl population tripled.<br> I
    15·1 answer
  • How soon after using phillips day light can you eat
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!