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
What adventures does nuclear power have over fossil fuels?
Vladimir [108]

Answer:Nuclear power reactors do not produce direct carbon dioxide emissions. Unlike fossil fuel-fired power plants, nuclear reactors do not produce air pollution or carbon dioxide while operating. However, the processes for mining and refining uranium ore and making reactor fuel all require large amounts of energy.

Explanation:This is from www.eia.gov

3 0
3 years ago
Read 2 more answers
Horses went extinct in North America and did not return until they were ferried in boats by European settlers (no land mammal ca
lys-0071 [83]

Answer:

sweepstake route

Explanation:

From the view of the horses, the ocean barrier would be seen as a  <u>sweepstake route</u>.

<em>By definition, the sweepstake route refers to a rather difficult or dangerous path through which animals can move from one place to another. No animal would take this path ordinarily except by pure chance or when events leave no other option.</em>

In the illustration, no horse would engage in an adventure of swimming across the ocean to North America until the European settlers decided to ferry them across. Hence, to the horses, the ocean barrier represents a sweepstake route.

6 0
3 years ago
Is a pansy, hydrangea, and sunflower a monocot or dicot plant?
Alex73 [517]
Pansies and Sunflowers = Dicots
Hydrangeas = Monocots
3 0
3 years ago
Read 2 more answers
After you eat lunch, nerve cells in your stomach respond to the distension (the stimulus) resulting from the food. This is best
strojnjashka [21]

Answer:

stimulus, control center

Explanation:

The control center is the main nervous system of the brain that is used to carry out different sensory, the motor and integration of data.

The stimulus control is the behavioral control that is described as the situations where behavior is triggered by the presence or the absence of any stimulus. Stimulus is the functional reaction in a tissue or any organ.

In the context, the nerve cells in the stomach responds to the stimulus that results from the foods after eating food is a mechanism between the stimulus and the control center.

7 0
3 years ago
Five different species of warblers, seed-eating birds, live in the same species of conifer trees. All of the birds migrate to co
sashaice [31]

Answer:

both c and d are pretty accurate, but i dont have very much knowledge on warblers specifically. but those 2 answers would be the most common for such a case

Explanation:

5 0
3 years ago
Other questions:
  • what is the main component of the cell membrane? a. lipids b. carbohydrates c. cholesterol d. proteins
    9·1 answer
  • 4. Evapotranspiration occurs when<br> 5. Condensation occurs when
    13·1 answer
  • Explain what accounts for the presence of a sound channel in the ocean based on how ocean stratification affects sound travel th
    6·2 answers
  • Which is a type of irradiation used to prevent food-borne illnesses?
    6·1 answer
  • The movement of oxygen molecules over time from one side of the semipermeable membrane to the other side is known as
    12·2 answers
  • Is a dung beetle and decomposer
    8·1 answer
  • What component of the lake ecosystem is living?
    10·2 answers
  • Match Column A with Column B
    9·1 answer
  • What are 3 differences between Mercury and<br> Mars?
    11·1 answer
  • Compare &amp; contrast capsids and envelopes of viruses.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!