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alexira [117]
2 years ago
13

In 2001, scientists announced that they had discovered a species of dinosaur called albertaceratops nesmoi that they believed to

be an ancestor of another better-known dinosaur species. how would scientists have determined that this newly discovered species was related to other known species of dinosaur?
Biology
2 answers:
Alex_Xolod [135]2 years ago
8 0
This question had choices. These are the missing choices.
A) Scientists made careful observations of behavioral patterns.
B) The DNA mutation rates for both species was calculated and compared.
C) Scientists made a detailed analysis of the fossilized bones of each species.
D) The enzyme activity of each species was studied to determine similarities in metabolism.

My answer:
C) Scientists made a detailed analysis of the fossilized bones of each species.

This determination is the only feasible thing to do since dinosaurs are long dead and choices A, B, and D requires the subjects to be alive.
Anna11 [10]2 years ago
5 0

The correct answer is that scientist they made some analysis which is detailed for the fossilized bones of each species.

Now that we don't have live dinosaur that was the only option which could have been taken, because the last dinosaur was wiped out at the time of asteroid or comet crashed the earth on the time of cretaceous.

The first dinosaur which have ever lived is referred to as wonky beast. It had lengthy tail and long neck.

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Answer:

b. Become a dwarf

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7 0
3 years ago
Which of the following explains why animals need more food when it is cold?
alexandr1967 [171]
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6 0
2 years ago
Need help with this please
wolverine [178]

Answer: movement is always voluntary

Explanation:

Muscles are contractile:

- Contractility is the ability of muscle cells to forcefully shorten. Think of having the ability to flex a muscle.

Muscles are excitable:

- Excitable tissue can conduct or transmit electrical impulses. Basically, it can react to stimulus, which may be delivered from a motor neuron or a hormone. For example, the hormone epinephrine helps muscles to produce force.

Muscles respond to stimulus:

- well since muscles are an excitable tissue, they can react to stimulus. (see answer above)

————————

Muscle movement is NOT always voluntary:

- Some muscle movement is voluntary, which means it is under conscious control. For example, a person decides to open a book and read. Other movements are involuntary, meaning they are not under conscious control, such as the contraction of your pupil in bright light, breathing, blinking, your heart beating, etc.

- Therefore, the correct answer is:

movement is always voluntary

hope this helps :)

3 0
1 year ago
In aquatic ecosystems, phytoplankton and other photosynthetic organisms appear in the upper layer of the water, but not deeper l
Stels [109]

Answer: alternative A

Explanation: The deeper the layer in water, the <u>less light reaches it</u>. In deeper layers, therefore, it becomes difficult, if not impossible, to photosynthesis to occur. Having in mind that <u>phytoplankton  and photosynthetic organisms depend on photosynthesis to survive,</u> they won't appear in such dephts.

3 0
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