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irakobra [83]
3 years ago
10

The inner calcium matrix of a sea urchin is called what? mantle

Biology
1 answer:
Tcecarenko [31]3 years ago
3 0
The 3 States Of Matter udndusjd
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what function does the limb serve in each animal? How are the limb bones of the four animals similar? Based on these similaritie
e-lub [12.9K]
The function of the limb is to help them get around and move. They might be similar in the way they’re structured? I don’t have a picture so I can’t tell. And you can assume that at one point these four animals all shared a common ancestor. Hope I helped!
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3 years ago
Identify the plant tissues in the three images.<br> A<br> B.<br> C
Bond [772]

I originally asked for the images but I will give it my best shot at answering your question without them! :D

There are only three types of plant tissues:

1. Dermal

2. Ground

3. Vascular

The dermal tissue is the outside of the plant's root, stem, or leaf, A.K.A the  the skin. If you're looking at a circular image, what ever is pointing to the outside ring of the stem is the dermal tissue.

The ground tissue is the flesh of the plant that is inside the dermal tissue. It surrounds the vascular tissue in the middle of the stem. Whatever letter is pointing to the wide, fleshy ring, that is touching the dermal tissue is the ground tissue. It is the largest part of a plants stem, roots, or leaves.

Lastly, the very inner ring or rings of the plant is the vascular tissue. It's made up of xylem and phloem. This can be found in many different places depending on the part of the plant, but what you're looking for is tiny circles within the ground tissue. If you're looking at the roots, you will see one circle in the very center of the plant, surrounded by ground tissue. If you're looking at the leaves, you will see one circle as well, and additionally other tiny circles throughout the ground tissue in each wing. Lastly, if you're looking at the stem, you'll see a circle of tiny circles within the ground tissue. These small circles are all vascular tissue.

7 0
3 years ago
Why do dogs respond to higher pitched voices?
Anni [7]

Answer: A high-pitched, singsongy vocalization means that an animal is non-threatening, peaceful or empathetic. Dogs even employ a higher pitch with us when they're trying to get the same message across, like when they whine when they see their owner.

Explanation:

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2 years ago
What living things are important for the frog’s survival?<br> Can you pls list three?
Elena L [17]

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food, water, habitat

Explanation:

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Which of the following is not true of bacteria?
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The choices?

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