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ale4655 [162]
3 years ago
13

Scott stated the following series of observations. Which represents a theory?

Biology
2 answers:
borishaifa [10]3 years ago
5 0

Answer: Stars are balls of hot gases

Explanation:

A scientific theory can be define as the statement or description which is based upon the cause of the natural process or event supported by repeated experimental trails and observations.

Among the options given,  Stars are balls of hot gases is the correct option. This is because of the fact that this represents the natural process of formation of star because of the fusion of gases supported by the experimental evidences.      

shusha [124]3 years ago
3 0
Stars are balls of hot gases
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Where is the squid shell found and what is it called
Elodia [21]

Answer:

It is called pen and it is located at the dorsal side

Explanation:

Squid belongs to the class Cephalopoda, subclass Coleoidea which is characterized by internal shell (unlike subclass Nautiloidea in which shell is located externally).

The shell of the squid (the pen) in very reduced and small, formed from chitin and located at the dorsal side. The pen provides attachment for muscles and it gives the squid stiffness.

Most likely, this internal shell evolved from the  external shell, because it is believed the ancestral of the organisms from the Coleoidea was probably nautiloid-like.

3 0
3 years ago
Many insects, fish, and mammals release certain chemical messengers to signal reproductive readiness. What are these messengers
Oliga [24]
"Pheromones" is the one among the following choices given in the question that these messengers are called. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer has actually come to your expected help.
8 0
3 years ago
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Gemiola [76]
The answer is C, sunlight
8 0
3 years ago
Recall that Archaea and Bacteria used to be grouped in the same category. How were archaeons first distinguished from other prok
Alekssandra [29.7K]

Answer:

By difference in there ribosomal RNA sequence

Explanation:

Both bacteria and archaea lack membrane-bound nucleus and earlier both are considered in the same categories. Carl Woese was the scientist who discovered that bacteria and archaea are not similar.

Carl Woese and his lab members checked the ribosomal RNA in some archaeans and concluded that the archaeans are more closely related to eukaryotes than bacteria. After the study on archean Carl Woese classified the prokaryotes into two domains i.e., bacteria and archaea.  

Therefore by difference in the ribosomal RNA sequence archaeons first distinguished from other prokaryotes.

3 0
3 years ago
Just need someone to check this ASAP please! Is it right?
4vir4ik [10]

the answer you put is right

5 0
3 years ago
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