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Xelga [282]
3 years ago
11

How old is a bone that has 12.5% of the original amount of radioactive carbon-14 remaining

Biology
1 answer:
uranmaximum [27]3 years ago
6 0
The bone would be 17,100 years old.
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Some autoimmune disorders are thought to be caused by _________, which occurs when an infectious agent is composed of antigens w
EastWind [94]

Answer: adaptive immune response

Explanation:

Autoimmune disorders are caused by different microoorganism and drug which manipulates the immune system in a way that immune system become unable to recognise between self antigen and foreign antigen. In that case immune system treats foreign antigen as self antigen which cause systemic or organ specific damage.

The exact cause of autoimmune disorders is unknown and hence it is  thought that it is caused by adaptive immune response which builds against self antigens and causes damage to the cells.

Hence, some autoimmune disorders are thought to be caused by adaptive immune response.

4 0
3 years ago
The table provided shows the predator-and-prey relationships in a wetland habitat.
cupoosta [38]

Answer:

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Explanation:

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7 0
3 years ago
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Ket [755]

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Ask for feeling of Numbness,, Pain,,Use of the affected limb,, Fever

Explanation:

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6 0
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vfiekz [6]

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3 If the mass of one of the objects is doubled, then the force of gravity between them is doubled.  If the separation distance between any two objects is tripled (increased by a factor of 3), then the force of gravitational attraction is decreased by a factor of 9 (3 raised to the second power).

4 idk about this one

5 0
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What do mountain gorillas eat??
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Answer:

roots, shoots, fruit, wild celery, and tree bark and pulp

Explanation:

3 0
4 years ago
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