Why do scientists believe that there used to be a single continent, and what was it called?

Answers

Answer 1

Answer:
Because they started finding the same fossils across the world and if you connected all the continents together it will form pangea.

Answer 2

Answer:

Answer:

Because all the continents today can fit together almost perfectly, and there is also so much evidence to it. It was called Pangaea.

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Mrs. smith underwent an arthrodesis of her spine for spinal deformity, posterior approach, segments l3-l5. what procedure code is reported

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The reported procedure code is 22800 since spinal arthrodesis is coded based on the approach. If an instrument was used, this would also be coded for the procedure.

Label each example as either (PI) passive or (AI) active immunity:a. ________ Bill had chicken pox when he was five. He doesn’t catch it again, even when his nephew gets sick with the virus.
b. _______ Billy Jr gets vaccinated with a live attenuated form of the chicken pox virus. He doesn’t get chicken pox after playing with his infected cousin.
c. _______ Bill’s 3 month old daughter is breast feeding. She does not get chicken pox after playing with her infected cousin.

Answers

First, let's distinguish active from passive immunity:
- Active immunity occurs in a direct exposure of individuals to live pathogens. The result is a development of a disease. After that, individuals acquire immunity to the disease.
- Passive immunity is induced by vaccines with antibodies for a disease, so the disease does not develop.

a. ACTIVE IMMUNITY - Bill had a disease, so it must be active immunity.
b. PASSIVE IMMUNITY - Bill got a vaccine and a disease did not develop, so it must be passive immunity.
c. PASSIVE IMMUNITY - Although, 3-month-old daughter did not get a vaccine, she has mother's antibodies from the milk so she will not develop a disease.

Answer:

Active

Passive

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Answers

Answer:

The correct answer is heterozygous.

Explanation:

The pea pods are heterozygous for pod color (Gg).

"G" is the dominant gamete and "g" is non-dominant. This explains why the pod in the fourth square is yellow because there is no "G" gamete, which would dominate the "g" gamete and make the pod green.

The action of insulin on sugar levels in the blood helps to

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Insulin is a stimulant and its in the body to help neutralize or diminish amount of sugar in your body

Small, uncharged substances enter and leave the cell membrane through the process of

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small, uncharged substance enter and leave the cell membrane through the process of : Simple diffusion When a substance enter pass your cell membrane, it will filter up the uneeded substance to be excreted out from your body and letting the one that needed in by leveraging the thickness of the substances concentration

Answer:

Simple diffusion is the process by which some atoms and molecules move directly across the cell membrane from an area of high concentration to an area of low concentration.

Crossing over and the separation of duplicated homologous chromosomes in the first division produce genetic variation. true false User: The nuclear envelope disintegrates during _____.
metaphase
prophase
anaphase
telophase

Answers

Question 1. The statement that 'Crossing over and the separation of duplicated homologous chromosomes in the first division produce genetic variation' is true. Crossing over is the exchange of genetic material between homologous chromosomes that occurs during meiosis. As the result, the daughter cells are genetically different from mother cells. It is one of the ways to produce genetic variation. Question 2. The nuclear envelope disintegrates during prophase. This is the process that occurs at the beginning of mitosis. During prophase, the first phase of mitosis, the chromosomes condense and the nuclear envelope disintegrates. At the end of mitosis, the chromosomes will decondense and the nuclear envelope will re-form.

Prophase is the answer

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