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Mariulka [41]
2 years ago
9

Feathers in birds appear to have first evolved for insulation but later conveyed a new advantage in helping create light aerodyn

amic surfaces. This switch in function is an example of ______.
Biology
1 answer:
Karolina [17]2 years ago
3 0

Answer:

<h2>Exaptation</h2>

Explanation:

Exaptation is the process by <u><em>which the features acquire those functions for which they were not originally selected</em></u> or adapted. Feather is an example of exaptation, it has appeared in various fossils of the flightless ancestors of modern birds, it later became important for flying, Once they molded for flying it adapted for that function, It is found in both behavior and anatomy.

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What caused scientists to change their ideas about cellular structures
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The invention of the microscope allowed the first view of cells. English physicist and microscopist Robert Hooke (1635–1702) first described cells in 1665. He made thin slices of cork and likened the boxy partitions he observed to the cells (small rooms) in a monastery.
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3 years ago
If we were to compare the cells in the plant leaves to the cells in the plant roots, we would expect the leaf cells to contain m
Gre4nikov [31]

The  correct answer is Chloroplast

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4 0
3 years ago
Read 2 more answers
HELP ME PLZZZZZZ!!!!!!!!!!!
notka56 [123]

Answer:

Explanation:

Objective(s): To see what will happen to the egg after soaking in water for 72 hours checking it every 24 hours

Hypothesis: I think the egg will get very thick because it will absorb the water

Variables:Independant: The circumference is measured every 24 hours

                Dependant: the circumference

                 Control: The same unit of measurement was used ( CM)

Materials:

Raw egg

String or thread or yarn

Ruler

White vinegar

Tap water

Syrup

Jar with lid (like a mayonnaise jar or something big enough to put the egg in)

Procedures:

Data and Observations:

Record your observations from the experiment in either the hands-on lab or the teacher-led video. Don't forget to include at least two detailed observations and the measurement of the egg's circumference in centimeters.

Time (hrs) Observations Circumference (cm)

0                the egg looks normal: 53 CM

24             Its starting to get bigger: 54 CM

48              It wont start getting bigger: 56 cm

72                Its huge: 57 CM

Conclusion:My hypothesis was correct. I knew the egg would get bigger because the water would absorb into the egg.  The egg grew 4 cm

Was your hypothesis correct? Why or why not?My hypothesis was correct. I knew the egg would get bigger because the water would absorb into the egg.

How much did the egg change in size? (answer should be in centimeters)The egg grew 4 CM

Refining the Experiment:

Continue this experiment by removing the egg from the water and covering it in syrup. Be sure to allow at least 24 hours before making your observations. Handle the egg very carefully!

Predict what will happen to the egg and syrup system.

When refining your procedures describe the following:

How will the change in the syrup and within the egg be measured or identified?

How will you determine when homeostasis has been reached in your egg and syrup system?

Be sure to address each bullet in the conclusion of your lab report:

Was your hypothesis correct? Why or why not?

How much did the egg change in size? (answer should be in centimeters)

SORRY I DIDN'T HAVE TO DO THIS PART ON MINE.

3 0
3 years ago
What property of water allows oceans to keep Earth's surface warm and insulated during
Scrat [10]

Answer:

This is the specific heat capacity

Explanation:

The specific  heat capacity of water is the quantity of heat energy needed to raise the temperature of 1 g of water by 1 degree.it is due to the  aggregation of hydrogen bonding  holding water molecules together.

Therefore,large quantity of heat energy is needed to be supplied to raise the temperature of water.

This is an advantage for earth temperature because  a significant rise in the earth temperature,would not  affect the earth because the ocean would have absorbed the heat.Therefore regulating the earth temperature within the narrow limits

However,during summer  little heat is released by the ocean and this cools the earth,this is because the specific heat capacity of the ocean is higher than that of the land,thus as the ocean warms up slowly its warms the earth.

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