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Zigmanuir [339]
2 years ago
7

1. Why does the angle of the sun at noon seem to change at different months throughout the year?

Biology
1 answer:
jolli1 [7]2 years ago
4 0

Answer:

1. The earth orbit is slightly elliptical, and the earth axis is tilted by roughly 23.5° to the orbit. These to factors combine to make the an analemma. But in the winter, When the Earth is on the other side of orbit, the Earth's north pole is tipped away from the Sun, so at noon the sun doesn't get as high.

2. The earth's spin axis is tilted with respect to it's orbital planet. This is what causes the season. When the earth's axis points towards the sun. it is summer for that hemispheres. Midway between these two times in spring and autumn, the spin axis of earth points 90 degrees away from the Sun.

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In this lab, you will be using black worms ( Lumbriculus variegatus) to investigate the effects of various chemicals on their pu
Leni [432]

Answer: All the above options are correct about the characteristics of Lumbriculus variegatus.

Explanation:

Lumbriculus variegatus also called the black worm belongs to the phylum Annelida and is used by biologists to illustrate:

-blood vessel pulsations,

-swimming reflex,

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-giant nerve fiber action potentials.

These studies where carried out on them due to the characteristics they possess. These includes:

-its blood circulates in a closed circulatory system

-Freshwater worm found throughout North America and Europe

-Prefers the shallow habitats found at the edges of ponds, lakes, or marshes

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4 0
3 years ago
In humans, how many alleles of genes found on the x chromosome do male have?
salantis [7]
I believe for a male its 26
7 0
3 years ago
Create an explicit equation for each recursively-defined sequence below.
lbvjy [14]

Answer:

  t(n) = 3·5^(n-1)

Explanation:

The recursive formula describes a sequence in which each term is 5 times the one before it. This is a geometric sequence with common ratio 5 and a first term that is said to be 3.

As you know, the generic formula for a geometric sequence is ...

  an = a1·r^(n-1)

For a1 = 3, r = 5, and a sequence named "t", this is ...

  t(n) = 3·5^(n-1)

5 0
3 years ago
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Hat is the law of conservation of energy?
tekilochka [14]

Answer:

Esta Ley fue enunciada en 1785 por el científico francés Antoine Lavoisier.

La ley de la conservación de la energía afirma que la cantidad total de energía en cualquier sistema físico aislado, permanece invariable con el tiempo, aunque dicha energía puede transformarse en otra forma de energía.

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The fast and long-distance movement of mitochondria along the axon of animal nerve cells is thought to be facilitated mainly by
Citrus2011 [14]
B is the answer hope that helps
4 0
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