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kaheart [24]
3 years ago
10

Outline the three steps your body’s immune system takes to fight off an infection

Biology
1 answer:
faust18 [17]3 years ago
3 0
The first line of defense is the skin. It is the largest organ in the body and it acts as a barrier between invaders (pathogens) and the body. Microorganisms and bacteria cannot enter the skin unless it is broken. Inflammation is one of the signs that the first barrier has been destroyed.

The second line of defense is your cells. These are your white blood cells (leukocytes). There are different types but each one fights off the pathogens in order to protect you.

Once the bacteria has taken over what happens is that your white blood cells will increase and will activate your lymphatic system. This explains why you get high fever and the lymph nodules are swollen when one is sick. For instance, tonsils will inflame for those who have bacterial infection in the throat.  <span />
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What are the two foods that the deer eating
Zielflug [23.3K]

Answer:

<em>Deer are herbivores</em>

Explanation:

<em>Deer are herbivores, that is, they eat plants. The diet of a wild deer includes such things as grass, bark, twigs, berries, young shoots and other vegetation. Deer eat about two pounds of dry food each day for every 100 pounds of body weight.</em>

6 0
3 years ago
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Salt dissolved in water is a solution, therefore _____
alukav5142 [94]

The following statements apply:

1. Salt is not chemically bonded to water.

2. The ratio of salt to water may vary.

3. Salt and water retain their own chemical properties.

The solution formed by dissolving salt in water is an example of a mixture, it is a physical change and no new substance is formed. The salt and the water are not chemically bonded and salt can easily be recovered from the water by mean of evaporation. Any amount of salt can be dissolved in the water and each of the component, that is, salt and water still retain their individual chemical properties.

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3 years ago
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When performing a routine phlebotomy, the most common gauge needle is?
andreyandreev [35.5K]
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4 0
3 years ago
If an animal fossil was found in a rock, what would be the best way to determine its absolute age?
LiRa [457]

Answer:

D

Explanation:

Absolute age is defined as the numeric age of fossils.

To identify the absolute age of a fossil,  the amount of certain radioactive elements in the rock are measured. When fossils are formed in the rocks, a small amounts of radioactive elements is included in it. The process to identify age of fossil using radioactive elements is known radiometric dating. So, radioactive isotope and its decay product gives absolute age of fossils.

Hence, the correct answer is "D".

3 0
2 years ago
Help me out please. Its a timed test
diamong [38]

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6 0
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