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salantis [7]
3 years ago
13

Anybody have a phase changes lab report ?

Biology
1 answer:
BaLLatris [955]3 years ago
7 0

NOPE

EXPLAIN:

NEI NOH KA NEI TEW NOH

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Which of the following statements describes the most likely selective pressure behind the evolution of feathers?
Tems11 [23]

Answer:

c. Feathers were used as part of a social display

Explanation:

There are many speculations about the origin of feathers, some researchers believe that they emerged as a specific function, others defend the idea of the emergence of feathers from a social display.

The social display may have been one of the factors for the origin of the feathers, since in addition to the conquest of the female, animals thus selected would gain more conducive conditions for survival, such as better regulation of body temperature. But social display alone could not have forced the emergence of more complex feathers, since in many cases sexual characters usually occur only in males and not in females, or less apparent in females.

The appearance of penaceous appendages in theropods may be linked to the evolution of a high metabolic rate, which provides an improvement in locomotor skills as well as distinct behavior and visual communication. The development of penaceous appendages may also have played an important role in regards competition and radiation success of maniraptor theropods and their descendants of active flight in the Jurassic. Therefore, the theory is believed that external factors (natural selection) along with social display could have propitiated the origin of feathers.

7 0
3 years ago
What would happen if a family did not have a male heir?
Wewaii [24]
If a family did not have a female heir then all wealth would pass to the nearest male relative. This explained why the goal of every Greek wife was to produce a male heir. Boys used to cut their hair and offer to gods before becoming men. The men were expected to keep their bodies in shape because they could go to war at any time. 
3 0
3 years ago
Which of the following statements describes the difference between physical and chemical (1 point)
Eddi Din [679]

Answer: Chemical weathering changes the composition of a rock, while physical weathering does not.

Explanation: The definition of a chemical change is a change that cannot be reversed and is caused by a chemical reaction. In this case, a chemical change to a rock would change the composition of the rock while physical changes may change the appearance of the rock, but not the composition.

4 0
3 years ago
Carrying the genetic code and determining an organism's structure and function are the functions of
Tom [10]
DNA carry's the genetic code
8 0
3 years ago
Read 2 more answers
Part 1: crossing beak color and tail-feather length cross a yyll (heterozygous parent with dominant traits) with yyll (homozygou
Luba_88 [7]
Since you forgot to put capital letters i assume it's like this:

1)A <span>Cross between YyLl (heterozygous parent with dominant traits) and yyll (homozygous parent with recessive traits).

</span><span> 2)offspring YyLl: 400, Yyll: 100, yyLl: 100 and yyll: 400

</span>The recombinant offspring are allele combinations that are not directly inherited from the parents.
The parents combinations:<span>YyLl and yyll,
</span>The recombinant combinations: Yyll and yyLl
The other types are exacly like the parents so they are not recombinant.

answer: Yyll and yyLl


3 0
3 years ago
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