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dybincka [34]
2 years ago
8

What period of the Mesozoic era did birds first appear?

Biology
2 answers:
lakkis [162]2 years ago
6 0
<span>The dinosaurs and the mammals appeared during the Triassic period, roughly 225 million years ago. The dinosaurs went extinct 65 million years ago. The Mesozoic Era lasted about 180 million years, and is divided into three periods, the Triassic, the Jurassic, and the Cretaceous.</span>
Komok [63]2 years ago
4 0

The earliest known birds appeared during the Jurassic Period of the Mesozoic Era, approximately 150 million years ago.


Thats what google said, sooo you decide what you want to do. :) Good luck!

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TEN MEDAL QUESTION
Elza [17]
<span>When running, one conflict that might arise is how far you are able to run without stopping for water. You might want to go a very long way and be unfamiliar with the area, so it is important to have scouted ahead for any place that can offer a drink. Otherwise, you will find yourself wondering whether it is safe for you to continue further away from home without adequate hydration.</span>
8 0
3 years ago
Match each structure on the left with the corresponding function on the right. Group of answer choices Chemically digests food,
Ad libitum [116K]

Answer:

1. Chemically digests food, absorbs nutrients and minerals from food - Small intestine

2. Breaks down and physically digests food - Stomach

3. Metabolizes nutrients, detoxifies blood, makes bile - Liver

4. Stores and concentrates bile - Gallbladder

5. Removes waste products and excess fluid - Kidney

6. Filtering structure of kidney - Nephron

7. Produces eggs and reproductive hormones - Ovary

8. Produces sperm and reproductive hormone - Testis

Explanation:

This question is asking to correctly match certain digestive organs with their respective function. The organs and their function are as follows:

- Small intestine: Small intestine is the major organ that digests food chemically, and also absorbs nutrients and minerals from food.

- Stomach: This breaks down and physically digests food.

- Liver is responsible for metabolizing nutrients, detoxification of blood, and making of bile.

- Gall bladder is a greenish yellow organ responsible for the storage and concentration of the bile produced by the liver.

- Kidney is the major excretory organ of the body, which removes waste products and excess fluid from the body.

- Nephrons are numerous filtering structure of the kidney.

- Ovary is the female reproductive organ that produces the eggs/ova and other reproductive hormone like oestrogen.

- Testis is the male reproductive organ that produces the sperm and other reproductive hormone like testosterone etc.

7 0
3 years ago
When electrons are lost, a<br> When electrons are gained, a<br> ion is formed,<br> lon is formed
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Answer: when one is lost, one is formed

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A certain species of marine invertebrate lays its eggs in the body of a fish. The eggs develop and mature within the fish, consu
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Option B is the answer..
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Answer:

the size of something from one end to the other; how long something is

  1. Running race track
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2 years ago
Read 2 more answers
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