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
Igoryamba
3 years ago
14

When penicillin was first introduced, it was very effective in destroying most

Biology
2 answers:
adell [148]3 years ago
8 0

Answer:

D

Explanation:

D is the correct answer. The rest do not represent evolution / natural selection well, and penicillin's strength has remained the same.

yan [13]3 years ago
5 0

Answer:

D

Explanation:

D is the correct anwser

You might be interested in
¿Por qué es fundamental el mantenimiento de la diversidad genética para la supervivencia de la población?
Vera_Pavlovna [14]

Answer:

Cells

Explanation:

...............?..

3 0
3 years ago
A graduated cylinder containing 40 mL of water has a total mass of 60 g. A solid object carefully lowered into the graduated cyl
Dafna11 [192]

Answer:

The correct answer is -

A) 35 g

B)30 mL

C)1.66666666666667g/ml3

Explanation:

Given:

mass of graduated cylinder containing 40 mL = 60 g

volume of water = 40 ml

increase in the level of water = 70 ml

increase in mass = 95

Solution:

A) mass of object -

increased mass - initial mass

90 - 60 = 35 g

B) volume of object

increased volume - initial volume

70 - 40 = 30 mL

C)  density d=m/v

d=35/30

d=1.66666666666667

8 0
3 years ago
Once a human is infected with a virus, bacterium, fungus, or parasite, how do these organisms cause disease?
Airida [17]

<u>Answer</u>:

Once a human is infected with a virus, bacterium, fungus, or parasite they interfere with the human’s normal body function .

<u>Explanation</u>:

The infection due to the pathogen are not always end up as a disease. Infection occurs when any pathogen comes inside the human body it can be virus, bacteria or can be fungus, and starts multiplying by getting suitable environment as well as the host. The microbes sometimes challenges the immune system and lowers the resistance power the body. So,  as viruses does by killing the fighter cells and also by disrupting the general cell functions.  

5 0
3 years ago
Which ope of cell does the strainer best model?
Nina [5.8K]

Answer:

sieve tube element

Explanation:

A P E X

7 0
3 years ago
What happens when a saturated solution is cooled from 50°C to 30°C?<br>​
andrey2020 [161]

Answer:

i think the partition will be occur

5 0
3 years ago
Other questions:
  • A therapist who sat with a patient with bulimia while the patient ate appropriate quantities of "forbidden" foods, and then stay
    12·1 answer
  • All organisms must be able to obtain nutrients from their environment. Which of the following terms describes the process of one
    5·2 answers
  • classify if the recessive allele for cystic fibrosis is represented as c, classify the following genotypes as homozygous dominan
    11·1 answer
  • Kaylee wants to test her hypothesis that she performs better on tests after getting more sleep. In which way will she best be ab
    13·1 answer
  • What is 2.7 repeating as a fraction or mixed number in simplest from?
    8·1 answer
  • How many primary tectonic plates make up the surface of Earth? -nine -eleven -seven -thirteen
    6·1 answer
  • Leukopenia is a condition characterized by a decrease in white blood cells. What effect does leukopenia have on the body's abili
    13·2 answers
  • Marijuana is a(n)
    5·2 answers
  • Plzzzzzzzz helppppppppp with the last question
    13·1 answer
  • Is a chemical substance that is produced in substantial quantities, and is reasonably expected to be released in to the environm
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!