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
Nuetrik [128]
3 years ago
11

Vaccinations were first used in what time period?

Biology
2 answers:
Art [367]3 years ago
5 0
C 1700-1800 hope this helps

miskamm [114]3 years ago
3 0
The correct answer is C) 1700-1800. Hope this helps.
You might be interested in
How do glucocorticoids enable the body to deal appropriately with stress? by releasing the neurotransmitters that prepare the bo
klemol [59]

Answer:

By increasing blood glucose, fatty acid, and amino acid levels

Explanation:

Cortisol, corticosterone, and cortisone are the glucocorticoids released by the adrenal cortex and serve to impart resistance to stress. These hormones stimulate protein breakdown (mainly in muscle cells), gluconeogenesis and lipolysis and thereby increase the concentration of amino acids, glucose and fatty acids in blood.

The amino acids are used by cells for synthesis of new proteins or for synthesis of ATP. Glucose is also used by cells to produce ATPs.

Glucocorticorticoids increase the sensitivity of blood vessels for hormones which in turn stimulate their constriction. The vasoconstriction raises blood pressure. The process of vasoconstriction resumes the normal range of blood pressure which is otherwise dropped by some emergency conditions such as injury and severe loss of blood.

7 0
3 years ago
Sara has just given birth to a baby and is exhausted. Her friend is studying biology and evaluating the process of photosynthesi
enyata [817]

Answer:

The solar energy is a part of growth. but! the baby will not servive living on only solar

7 0
3 years ago
B) a moth population is at hardy-weinberg equilibrium. what can you conclude about how the gene pool of the population changes o
mestny [16]
There should not be any changes in the gene pool.

In Hardy-Weinberg equilibrium, the gene pool should have a constant rate. The equilibrium can be achieved if there is no factor that favors one gene more than the others. Since the genes have the equal chance to survive and mating, the ratio of the gene pool should not change dramatically.
8 0
3 years ago
6. (50 points) EXPLAIN all of the tree trimming steps in order as if you were discussing a job with a
stiks02 [169]

Step one: Travel approximately 18 inches up the underside of the branch you are removing. Cut up about halfway through the branch.

Step two: Move to the top side of the branch. Choose a location an inch further out from your first cut. Carefully cut down until the branch breaks free.

Step three: Find the branch collar on your trunk. This is stem tissue around the base of the branch. . Make a complete cut with a 45-degree angle kicking out from the base of the tree.

(SOURCE Chris Lambton) Add your vocabulary words in along the way if you decide to use my answer.

5 0
3 years ago
A weakened immune system may be caused by what?
bekas [8.4K]
Lack of antibodies because thats the stuff to fight things away
8 0
3 years ago
Other questions:
  • The _____________ is the first major organ to form in a developing fetus.
    12·1 answer
  • Which of the following correctly explains differences between steroids and enzymes
    9·1 answer
  • How does carbon-14 dating work?
    12·1 answer
  • Match the macromolecules to their examples.
    11·2 answers
  • What is a specialized species
    8·1 answer
  • Chinstrap and Gentoo penguins are two species of penguins that feed on krill in the Antarctic Ocean.
    10·2 answers
  • 10. Deafness in cocker spaniels is inherited. The allele for deafness (d) is recessive to the allele for hearing (D). Two cocker
    13·2 answers
  • What is photosynthesis ??​
    13·2 answers
  • Can you determine the temperature at which two unknown substances change states?
    11·1 answer
  • A __________________ allows hydrogen ions to flow across the inner mitochondrial membrane.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!