Answer:
D
Explanation:
the ozone layer formed and began to shield the surface of the Earth from the harmful ultraviolet light. This allowed life forms to evolve to survive on the surface of the oceans and on land and also allowed organisms who metabolize oxygen (like us!) to develop.
The change in the Earth's atmosphere which allowed life to form is the development of an ozone layer. Thus, the correct option is D.
What is the Ozone layer?The ozone layer is a region of the Earth's stratosphere which absorbs most of the Sun's ultraviolet radiations. Earth's stratosphere contains a high concentration of ozone in relation to other parts of the atmosphere, although it is still present in small amount in relation to other gases in the stratosphere.
The ozone layer in the stratosphere absorbs a big portion of the radiations from the sun, preventing it from reaching the planet's surface. Most importantly, ozone absorbs the portion of UV light called UVB. UVB is a kind of ultraviolet light which comes from the sun that has several harmful effects.
Therefore, the correct option is D.
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Which of the following is NOT a function of the integumentary system?
a Helps regulate body temperature
b Eliminates waste from the body
c Helps move the body
Two students described a part of Earth's middle layer.
Bob: The deepest part Joe:
The semi-fluid part
Which part of the middle layer did Bob and Joe describe? (1 point)
a They both described the mesosphere.
b They both described the asthenosphere.
c Bob described the mesosphere and Joe described the asthenosphere.
d Bob described the asthenosphere and Joe described the mesosphere.
Answer:
joe is right
Explanation:
because that is the mantle
How do wind and rain affect folded mountains?
(A) Weather wears down mountains and makes them smaller.
(B) Weather brings soil to to areas and the mountains larger.
(C) Weather causes tectonic plates to move, so the mountains are larger.
(D) Weather slows down tectonic plates, so the mountains stop growing.
Answer:
A
Explanation:
heyyy can someone pleasee use the diagram to answer the true/false question xx
Answer:
False
Explanation:
It will always be equally lit but we see the moon from different perspectives, hence making us think that we see the moon at different lit up amounts
The Ring of Fire is the result of tectonic plates, huge slabs of Earth's crust that fit together like
pieces of a puzzle. The plates are constantly moving atop a layer of solid and molten rock called
the mantle. Sometimes these plates collide, move apart or slide next to each other.
How does the analogy to a puzzle help the reader to understand tectonic plates?
(A) It helps the reader to imagine how large and heavy they are.
(B) It helps the reader to consider their exact shapes and curves.
(C) It helps the reader to visualize how their edges meet and align.
(D) It helps the reader to understand that they can be lifted.
Answer:
the answers is C) It helps the reader to visualize how their edges meet and align
Plate movement results in three types of tectonic boundaries: convergent boundaries, where plates move into one another.
It helps the reader to visualize how their edges meet and align.
How can you describe the movement of plates?Plate movement results in three types of tectonic boundaries: convergent boundaries, where plates move into one another, divergent boundaries, where plates move apart, and transform boundaries, where plates move sideways in relation to one another. They move at a one to two inch (three to five centimeter) per year rate.The numerous tectonic plates constantly shift and interact. This motion changes the shape of the Earth's outer layer. This process produces earthquakes, volcanoes, and mountains.According to plate tectonics theory, pieces of the Earth's lithosphere are in slow, constant motion as a result of mantle convection currents.To learn more about : plate tectonics theory
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PLEASE HELP OUT !!
Which options describe patterns found in the fossil record?
(Select all that apply.)
Earth’s species have remained constant throughout time.
Links exist connecting the lineage of different species.
Most of the species that have ever existed on Earth are still alive today.
Mass extinction events occur periodically throughout time.
heyyy can someone pleasee use the diagram to answer the true/false question xx
How many chromosomes do humans have in each cell?
A. 46 pairs, total of 92
B. 10 pairs, total of 20
C. 22 pairs, total of 44
D. 23 pairs, total of 46
A student is trying to model an ocean environment. What is the MOST important factor the student should add to the aquarium in order to make sure that the model is accurate?
A.starfish
B.seaweed
C.salt water
D.coral reef
Answer:
C: salt water
Explanation:
everything would be dead if there was no water
The most important factor while preparing a model of an ocean environment is Salt water. Marine ecosystems show high salinity. Thus, the correct option is C.
What is Ocean environment?Ocean ecosystems or environments are characterized by the important factors which include the availability of light, food and nutrients. Oceans have some unique properties which include high salinity, the freezing point which is slightly lower than that of fresh water, density which is slightly higher than other waterbodies, electrical conductivity which is much higher, and the slightly basic nature.
Oceans are important as they feed us, regulates the climate, and generate most of the oxygen which we use for breathing. They also serve as the foundation for much of the world's economy, supports important sectors from tourism to fisheries to the international markets.
Therefore, the correct option is C.
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Explain why different mating systems exist.
Answer:
.Mating systems are important to understand because they reflect the result of natural selection on mate choice, and ultimately on strategies for maximizing individual reproductive success
Explanation:
Continental crust is composed of
A. metamorphic rock
B. igneous extrusive rock
C. sedimentary rock
D. igneous intrusive rock
PLEASE HELP 15 POINTS
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C. Sedimentary Rocksthis is worth 30 points, help is much appreciated!
Answer:
A
He has to gather information to present to have a good graph presentation
Then,he will be able to get good remarks
Hope this help!
what is the purpose of headings in a table?
I do believe the answer may be C, but I got one question wrong and I want a 90 percent on this, so help is much appreciated!
heyyy can someone pleasee fill in the blankss
Answer:
the moon is one-fourth the size in earth diameter (write fraction in the blank.) the distance from the moon to the earth is 385,000 earth diameters. one of the limitations of this model is that it does not describe the movement of the earth and the moon in each of their orbits. complete the sentences below to add that information to the model it takes 27 days to orbit around the earth. the moon orbits earth in a Circle