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gulaghasi [49]
3 years ago
8

1. The first choice on a dichotomous key is:

Biology
1 answer:
mr Goodwill [35]3 years ago
3 0

Answer:

dont no

Explanation:

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If an animal fossil was found in a rock, what would be the best way to determine its absolute age?
LiRa [457]

Answer:

D

Explanation:

Absolute age is defined as the numeric age of fossils.

To identify the absolute age of a fossil,  the amount of certain radioactive elements in the rock are measured. When fossils are formed in the rocks, a small amounts of radioactive elements is included in it. The process to identify age of fossil using radioactive elements is known radiometric dating. So, radioactive isotope and its decay product gives absolute age of fossils.

Hence, the correct answer is "D".

3 0
3 years ago
Which of the following is a function of the vertebral column? Select one: a. It supports the weight of the body. b. It allows sp
lisov135 [29]

Answer:

<h2>b. It allows spinal nerves to exit the spinal cord. </h2>

Explanation:

  • The vertebral column is an important characteristic of vertebrates.
  • The formation of the vertebral column takes place from the notochord in the vertebrate.
  • The vertebral column is also known as the spine or generally called the backbone.
  • It forms the spinal canal that is responsible to provide protection to the spinal cord.
  • The vertebral column is divided into many regions into human beings and some other organisms according to its function and position.
  • It has many functions such as protection of the spinal cord, allow passes of spinal nerves and some other.

5 0
4 years ago
Which of the following specifies a single amino acid in a polypeptide chain?
Nataliya [291]
<span>B. the complementarity of DNA and RNA
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7 0
3 years ago
The shock-absorbing pads between the vertebrae are formed of fibrocartilage. _________ The role of brown fat is to warm the body
alexandr1967 [171]

The shock-absorbing pads between the vertebrae are formed of fibrocartilage. TRUE

The role of brown fat is to warm the body; whereas, the role of white fat is to store nutrients. TRUE

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Cartilage tissue tends to heal less rapidly than bone tissue.  - TRUE

Intercalated discs and striations are both characteristic of skeletal muscle. - FALSE

A smooth muscle cell has a central nucleus but lacks striations. -TRUE

Endocrine glands are often called ducted glands. - FALSE

5 0
4 years ago
The female Anopheles Mosquito is vector for the malarial pathogen.
klemol [59]
Malaria is transmitted among humans by female mosquitoes of the ... The successful development of the malaria parasite in the mosquito (from ... The adult stage is when the female Anopheles mosquito acts as <span>malaria vector</span>.
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