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Vlad1618 [11]
2 years ago
11

A Conversation between characters in a story

Biology
1 answer:
barxatty [35]2 years ago
4 0

It's "Dialogue"

have a good day!

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Among vertebrates, the unique feature of lampreys and hagfish is the ________. among vertebrates, the unique feature of lampreys
marshall27 [118]
The correct answer is absence of jaws.
Lampreys and hagfish are in the class Agnatha, they are jaw-less fish. The members of the agantha class are probably the earliest vertebrates. Scientists have found fossils of agnathan species from the late Cambrian period that occurred 500 million years ago. 

5 0
3 years ago
Why would a geologist be surprised by this model?
aliina [53]

Answer:

I am expecting that option c or d is correct

6 0
2 years ago
What percentage of water is lost through the respiratory system?
HACTEHA [7]
<span>The normal daily input of water is about 2.5 L from beverages food, and metabolism. The normal daily output of 2.5 L consists of 1.8 L in urine, sweat, and feces, plus 0.7 L in insensible water loss. Insensible water loss is water that evaporates through the skin and from the respiratory tract. Insensible losses account for 0.7 L of water loss per day. The average human exhales an average of 0.35 L of water each day. This corresponds to about 14% of water lost through respiration.</span>
4 0
3 years ago
Read 2 more answers
A species of elm has winged-seeds. How would biologists explain how a species of elm with winged-seeds evolved from an ancestral
dimaraw [331]

Answer:

In an ancestral elm species, mutations gave rise to the phenotypic trait "winged-seeds". Subsequently, selection favored elm plants with winged-seeds that diverged over time to become a separate species

Explanation:

A mutation is a genetic change in the DNA sequence. In general, mutations have a negative impact on the fitness of the individual (i.e., mutations are generally deleterious) and therefore they disappear from the population. However, there are situations where mutations are beneficial and confer an adaptive advantage, thereby increasing their frequency in the population. In this case, mutations associated with the formation of winged-seeds conferred an adaptive advantage (i.e., higher seed dispersal capacity) to individuals who had this phenotypic trait, thereby these individuals had more chances to reproduce and pass their genes to the next generation. Eventually, Elm plants with winged-seeds accumulated sufficient genetic differences to prevent interbreeding, leading to the formation of a separate species.

4 0
3 years ago
Carbon tends to form four bonds. What kind of bonds are they?
lidiya [134]

Carbon forms Covalent Bonds.      

7 0
3 years ago
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