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3 years ago

Does an earthworm have an open or closed circulatory system explain

1 answer:

5 0

The correct answer is that Earthworms hold a closed category of circulatory system. The earthworms circulates blood solely through their blood vessels. There are three major vessels that deliver the blood to the organs of the earthworm, those vessels are known to be the aortic arches, dorsal blood vessels, and ventral blood vessels.

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Harry had been learning about joints in one of his classes at school. On the way to the emergency room he tried to recall what t

ipn [44]

Answer:

The correct answer is -

1. hyaline cartilage

2. fibrocartilage

3. hyaline cartilage

Explanation:

1. The hyaline cartilage covers the articular cartilage of the synovial joint that is translucent or clear as glass-like cartilage that has a firm consistency and a high amount of collagen.

2. A symphysis is an amphiarthrotic joint which is a fibrocartilagenous joint that joins with the adjacent bone. This is a very tough or strong tissue.

3. The growth plate of the long bone or epiphyseal plates are examples of synchondrosis,which is a hyaline cartilage composed tissue.

3 0

3 years ago

The chromosomes in the nucleus of a cell contain a code that stores hereditary material known as?

Genrish500 [490]

DNA (deoxyribonucleic acid)

7 0

4 years ago

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Bacteria multiply by division.One bacterium becomes two. Then two divide into four the four divide into eight and so on For a ce

quester [9]

59 minutes

Explanation:

There is 1 hour (equivalent to 60 minutes) between 11.00pm and midnight.

Using the formulae; P (future) = P (present) * (1 + i)ⁿ where

P (Future) = Future Population

P (Present) = Present Population

i = Growth Rate

n = Number of generations

The bottle was full after 60 minutes and it was filed by the following number of bacteria

P(future) = 1 * (1+1)⁶⁰ = 1,152,921,504,606,846,976

A half-filled bottle would have half the number = 576,460,752,303,423,488

Using the same formulae to find after how many generations do we get to this number;

576,460,752,303,423,488 = 1 * (1+1)ⁿ

(576,460,752,303,423,488) / 1 = (2)ⁿ

n = log₂ (576,460,752,303,423,488)

n = 59

This means the bottle got full at 59 minutes.

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3 0

4 years ago

What is soil erosion?

Roman55 [17]

Soil erosion is defined as the wearing away of topsoil. Topsoil is the top layer of soil and is the most fertile because it contains the most organic, nutrient-rich materials. Therefore, this is the layer that farmers want to protect for growing their crops and ranchers want to protect for growing grasses for their cattle to graze on.

5 0

3 years ago

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Cholera is a bacterial infection of the small intestine. Vaccination provides protection against cholera. The cholera vaccine is

Yuki888 [10]

White Blood Cells could be a possible answer. Not sure if this is multiple choice or not.

8 0

3 years ago

Read 2 more answers