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zzz [600]
3 years ago
11

What kind of leaf is this?

Biology
1 answer:
lorasvet [3.4K]3 years ago
3 0
The name of the leaf is a Black locust
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Please help me , Describe how bonds contain energy and what the energy is used for
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Answer:

Chemical bonds contain potential energy.

Explanation:

Chemical bonds always contain potential energy. The atoms of the bond want to move to a lower energy to become more stable.. The energy for breaking bonds only comes when stronger bonds are formed.  This energy is used to tear apart the bonds holding the Hydrogen atoms together. The strength of the covalent bonds depend on the overlap between the valence orbitals of the bonded Atom.

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Allergens differ from antigens because ________. Allergens differ from antigens because ________. allergens do not involve the l
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Allergens differ from antigens because *they do no stimulate the immune system resulting in the production of leukocytes rather than the stmulate the IgE antibodies*

Explanation:

Allergen and antigen are both foreign substances that can cause certain disorders to animals, but there is some difference between them in terms of their nature and the diseases caused by them. An allergen is a nonparasitic foreign substance that can cause certain immune reactions in the body when it enters the body.  Whereas, an antigen is a foreign substance that can trigger the immune system to produce a specific immune response. This immune response leads to produce antibodies that can neutralize or destroy the foreign substances that entered the body.

Allergens can produce Systemic Allergic Response. Allergens stimulate the IgE antibodies by binding to them on the mast cells and causing the mast cells to rupture and release histamine, serotonin, and heparin, initiating inflammatory response.

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Different between triceps and biceps​
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The difference  is  that the Triceps is a arm muscle and Biceps is a muscle of the arm. While the biceps crosses both the shoulder and elbow joints

Explanation:

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