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
bekas [8.4K]
3 years ago
6

What are some possible reason of epidemic in 1989-1991?

Biology
2 answers:
Andreyy893 years ago
5 0

Answer: People were probably not getting vaccinated or the bacteria became immune to the vaccine.

Explanation: yw plz mark brainliest i need one more (:

devlian [24]3 years ago
3 0
There were hardly any people getting vaccinations. Therefore they were all sick
You might be interested in
Why are nitrogen oxides considered harmful to humans?
Stolb23 [73]

Answer:

<em>Nitrogen</em><em> </em><em>dioxide</em><em> </em><em>is </em><em>an </em><em>irritant </em><em>gas,</em><em> </em><em>which </em><em>at </em><em>high </em><em>concentration</em><em> </em><em>cause </em><em>inflammation </em><em>of </em><em>the </em><em>airways.</em><em> </em><em>.</em><em>.</em><em>.</em><em> </em><em>Nox </em><em>gases </em><em>react</em><em> </em><em>to </em><em>form </em><em>smog </em><em>and </em><em>acid </em><em>rain </em><em>as </em><em>well </em><em>as </em><em>being </em><em>central </em><em>to </em><em>the </em><em>formation</em><em> </em><em>of </em><em>fine </em><em>particles </em><em>and </em><em>ground</em><em> </em><em>level </em><em>ozone,</em><em> </em><em>both </em><em>of </em><em>which</em><em> </em><em>are</em><em> </em><em>associated</em><em> </em><em>with </em><em>adverse </em><em>health</em><em> </em><em>effects.</em>

6 0
2 years ago
Read 2 more answers
Giving everything!!!!!!!!! Plzzzz help!!!!!!!!!!! ASAP!!
Jobisdone [24]

Answer:

ff

Explanation:

ff

3 0
2 years ago
What is the purpose of natural selection
madam [21]
Natural selection<span> is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.</span>
8 0
3 years ago
Read 2 more answers
In photosynthesis, the energy from the sun eventually gets converted into chemical energy in the form of ATP and sugar that the
marta [7]

Answer:

Glucose enters the mitochondria for production of ATP.

Explanation:

Photosynthesis is the process through which solar energy is used to make glucose.

To generate chemical energy for cellular processes, glucose is broken down through cellular respiration in the mitochondria. This generates large amounts of ATP, which acts a source of energy to power reactions in the cell.

Excess glucose is stored as starch in plant cells

5 0
2 years ago
Sidra has a baby that was born at 27 weeks. her baby is considered:
andreev551 [17]

The baby is considered as extremely preterm infant.

The babies that are born alive before the completion of a period of 37 weeks of pregnancy are the preterm babies. There are three categories into which preterm born babies are distinguished: moderate to late preterm for 32-37 weeks, very preterm for 28-32 weeks and extremely preterm for less than 28 weeks.

Premature births are one of the major causes of death of children under the age of 5 years. The babies that survive may have problems and may be  visual or hearing impaired, may have learning disabilities etc.

7 0
2 years ago
Read 2 more answers
Other questions:
  • Is a mystery liquid and the water outside a solution?
    5·1 answer
  • Unlike minerals such as iron and calcium, protein is a macronutrient in the human diet. Why is protein a macronutrient?
    7·1 answer
  • Name four categories of organic molecules
    14·2 answers
  • Why should we use CER method when approaching a question
    5·1 answer
  • I'm giving alot of points but just please give a heart in for all of you, you all matter to me even if I don't know you♥️♥️​
    15·1 answer
  • The complement system is:
    7·1 answer
  • What is one thing that your teacher should know about you? What will help the
    7·1 answer
  • Which best describes a gene
    15·2 answers
  • What will happen if all snakes are killed​
    6·1 answer
  • Use the periodic table to identify the chemical
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!