Explain how plate tectonic plays a role in the evidence of common ansestry

1 answer:

6 0

Well people think that the continents and everything was all in one on this plate called pangea, it existed during late Paleozoic and early Mesozoic. It began to break apart about 175 million years ago, and when it broke the North American plate was created as it became its own continent and so as the others

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Cytokinesis occurs after _____, but events leading up to it actually begin during _____.

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How does the uterus prepare itself to receive a fertilized egg?

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The fertilized egg begins a rapid descent to the uterus. The period of rest in the tube appears to be necessary for full development of the fertilized egg and for the uterus to prepare to receive theegg. ... At the end of this transition period, the embryo becomes a mass of very organized cells, called a blastocyst.

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In eukaryotes, the size of the primary transcript is generally ________ the gene in the template dna strand.

Hunter-Best [27]

Had to look for the options and here is my answer.
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The heart is a cone-shaped muscular organ located within the ________ of the thorax. its apex rests on the ___________ and its s

Arte-miy333 [17]

The heart is a cone-shaped muscular organ located within the mediastinum of the thorax.

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Its apex rests on the diaphragm and its superior margin lies at the level of the 2nd rib.

The apex of the heart is the conical area created by the confluence of the ventricles, but mainly by the left ventricle. It rests on the diaphragm. The superior margin of the heart, also known as the base, lies at the level of the second rib.

Approximately two-thirds of the heart mass is seen to the left of the midsternal border.

This is because to the left of the midsternal border lies the left ventricle which comprises most of the heart mass as the left ventricle is the one responsible for pumping blood throughout the systemic circulation and significant pressure should be overcame; resulting to the physiologic hypertrophy of the left ventricle.

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The pericardium is one of three layers of the heart (other ones being the myocardium and the endocardium); and is the outer layer of the heart. The pericardium is composed of two tissues, the fibrous pericardium and the serous pericardium. The pericardium functions to lubricate the movement of the heart by the action of the pericardial fluid.

The heart has four chambers. Relative to the roles of these chambers, the atria are the receiving chambers, whereas the ventricles are the discharging chambers.

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The nucleus of an atom has a _______ charge.

Fantom [35]

Well a nucleus of an atom has a positive charge
2. is the correct answer

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4 years ago

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