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xz_007 [3.2K]
3 years ago
13

What caused the End Ordovician extinction

Biology
1 answer:
attashe74 [19]3 years ago
5 0

Answer:

the first wave of extinction may be related to rapid cooling at the end of the Ordovician Period, and the second phase is widely regarded as having been caused by the sea-level fall associated with the glaciation.

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(opening the door) describe the work of at least 3 body organ Systems that work during the process.
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When a person opens the door, he or she uses 3 systems:

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3. Skeletal system: the bones are the support of the soft tissues and the fulcrum of most of the skeletal muscles. In this sense, it serves as a support for the muscles of the trunk and the upper limb to carry out the movement of opening the door.

we can conclude that the correct answer is:

Answer:

1. Nervous system: instructions are generated from the nervous system by means of electrical impulses towards the muscles of the upper limb so that they carry out the necessary movements to open the door.

2. Muscular system: the muscles of the trunk and the upper limb generate voluntary movement to open the door.

3. Skeletal system: it supports the muscles of the trunk and the upper limb to carry out the door opening movement. It also has joints that help the mechanical movements necessary to open the door.

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Bacteria and archaea differ in (1 point)
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