Which of these best describes the tiny leg bones that some whales have, which do not aid in their movement or serve any other function?
O structures that grow and improve in function as they are used
O structures that function at certain times of the year or under certain conditions
O structures that will become adaptations when the environment changes
O structures that have lost all or most of their function over evolutionary time
Answer:
D. structures that have lost all or most of their function over evolutionary time
Explanation:
the question states that the leg bones are almost entirely unused because of evolution
The study of change over a period of time is called evolution.
The correct answer of the following is D.
The change in the species over the period of time is called evolution. It is necessary to adapt itself in order to survive in nature.
According to the lamark, it is said that the organs which are no longer used in the body will become vestigial and will be removed from the body over a period of time.
According to the question, the small bones in the whale is might have functioned in the ancestor period but not in the current time due to the course of the evolution.
Hence, the correct answer is D that structures that have lost all or most of their function over evolutionary time.
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how does insulin travel around the body?
Answer:
In nerve cells
Explanation:
It flows in the blood stream
3 interesting facts about strokes
Answer:
Stroke Facts
In 2018, 1 in every 6 deaths from cardiovascular disease was due to stroke.
Someone in the United States has a stroke every 40 seconds. ...
Every year, more than 795,000 people in the United States have a stroke. ...
About 185,000 strokes—nearly 1 of 4—are in people who have had a previous stroke.
I gave you more than three just in case you don't think of one
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What are other animals that predict the length of winter. Not a Groundhog
URGENT WILL GIVE BRAINLY FOR RIGHT ANSWER
A.
Planet B will keep orbiting its star longer than Planet A.
B.
Planet B is more attracted to its star than Planet A.
C.
Planet A has a longer year than Planet B.
D.
Planet A orbits its star faster than Planet B.
How did Darwin's discoveries lead to the theory of evolution
Wave able to travel through only through solids, moves in a side to side or
up down motion, slow
P-wave
Q -wave
R-wave
S-wave
Answer:
S-Wave
Explanation:
S-Waves are only able to travel through solids, and are known for moving in a side to side or up and down.
Let me know if this helps!
What diagram represents a pair of homologous chromosomes?
Answer:
I think your answer would be B.
Explanation:
sorry if it is incorrect :/
what type of boundary is the arabian and eurasian plate?
Answer:
The Zagros and Makran Mountains in Iran and the Taurus Mountains in southern Turkey are the eastern and northern boundaries of the Arabian Plate, which are convergent plate boundaries that represent the zone of collision between the Arabian Plate and the Eurasian plate.
The northwest by a left-lateral transform fault boundary.
Scientists use a process called gel electrophoresis to separate DNA fragments. The process involves placing a mixture of DNA fragments at one end of a slab of porous gel. Then a power source is used to generate an electric potential across the gel.
The diagram shows the process of gel electrophoresis. First, DNA fragments, mixed with a restriction enzyme, are placed at one end of a slab of gel. Then a power source is applied; the longer DNA fragments stay near the negatively charged end, and the shorter fragments move toward the positive end.
Gel electrophoresis is successful because of which property of the DNA fragments?
A. The DNA fragments may be positively-charged, negatively-charged, or neutral.
B. The DNA fragments travel at different speeds through the gel.
C. The DNA fragments travel at the same speed through the gel.
D. The DNA fragments chemically react with the gel in different ways.
Answer:
C. The DNA fragments travel at different speeds through the gel.
Who determined the percentage of adenine (A) in the DNA
always equaled the percentage of thymine (T), and the
percentage of guanine (G) always equaled the percentage of
cytosine (C).
How does deforestation affect the natural world?
Answer:
The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a whole lot of problems for indigenous people.
Answer:
Deforestation affects the natural world because you are getting rid of habitats that animals live in and it makes the animals forced to move to another environment. Other factors include animal endangerment and extinction, soil erosion and disruptions in the Earth’s carbon and climate cycles, if deforestation happens.
Explanation:
Hope that helps
How are humans impacting the carbon cycle positively?
Someone plz help
Giving brainliest
Answer:
What are the instructions? Let me know so I can help in the comments :)
98.9 grams Na-
Convert to moles
Answer:
4.31877 moles
Explanation:
I believe its around 4.30 moles.
98.9g over 1 times 1 over 22.90 this is the molar mass of na= 4.31877 moles
Hope this helps!
The way a plant or animal adjusts to the environment is known as?
Answer:
adaption,,
Explanation:
Hey sorry It's Chloe again I ask a lot of questions I'm sorry, But I need facts and topics on birds for a report
Thank you :)
Answer:
Ravens are great at mimicking human speech and sounds. ...
Ostriches have the largest eyes of any land animal. ...
Cardinals like to cover themselves in ants. ...
Owls devour their prey whole. ...
Some ducks sleep with one eye open. ...
Kiwis are sometimes called "honorary mammals." ...
Most hummingbirds weigh less than a nickel.
Explanation:
Answer:
Facts
Birds have feathers, wings,lay eggs nd are warm blooded
There around 10000 different species of birds worldwide
The Ostrich is the largest Bird in the world
Scientists believe that birds evolved from theropod dinosaurs
Birds have hollow bones which help them fly
The Smallest bird egg belongs to the hummingbird and is the size of a pea
Around 20% of bird species migrate long distances every year
Hummingbirds can fly backwards
Topics:
Feathers
wings
beak
Explanation:
i hope this helps
9. What genetic syndrome is shown in this picture?*
What is the region that is located between Mars and Jupiter and is labeled A
in the illustration?
Solar System
А
O A. The Kuiper belt
OB. The asteroid belt
O C. The terrestrial belt
OD. The comet belt
Answer:
asteroid belt
Explanation:
region between Mars and Jupiter became the asteroid belt. Occasionally people wonder whether the belt was made up of the remains of a destroyed planet, or a world that didn't quite get started. However, according to NASA, the total mass of the belt is less than the moon, far too small to weigh in as a planet.
Infrared waves have _____ than microwaves.
A: more energy
B: lower frequency
C: longer wavelength
D: all of the above
Answer:
b
Explanation:
yea
How can a material at a certain temperature have all of its molecules at the same energy?
Answer:
The average kinetic energy of the molecules is proportional to absolute temperature. At any given temperature, the molecules of all gases have the same average kinetic energy.
Explanation:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. Solids, liquids and gases all expand when heat is added.
what are the advantages of adaptation ?enlist in points
Answer:
The economic benefits of adaptation are many: sustained or increased agricultural production, higher household incomes, enhanced environmental services, protection of the asset base, and less vulnerability to extreme weather events.
Answer:
this answer may help you
all of the organisms except the __________ are in the Animal Kingdom.
Answer:
Dogwood tree
Explanation:
What does it mean that there is both unity and diversity of life at the level of the cell?
Answer:
All livings organisms are with unicellular origin. The cells have a common structure like cell membrane, DNA , RNA and necessary enzymes. The genetic code of protein synthesis is almost similar with few exceptions. This shows unity in design.
Further evolutionary changes took place due to environmental stress. The genome of each species is designed as per need and efficiency. This is diversity.
This is true with all five kingdoms of life that is monera, protista, fungi, plantae and animalia.
Explanation:
Can someone pls help . I WILL MARK U BRAINLIEST !!!!
Which of the following phrases best describes the function of meiosis?
Group of answer choices
produces genetically unique diploid cells
produces genetically identical haploid cells
produces genetically unique haploid cells
produces genetically identical diploid cells
Answer: C.) Produces genetically unique haploid cells
Explanation: Meiosis will produce genetically unique cells because they are meant to pass onto offspring, and they are haploid because there are half the number of chromosomes in them. The organism will receive 2 sets, one from each parent, so that is why each parent who's cells undergo meiosis have to produce haploid cells.
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Describe at least two of the four major systems we looked at in class: Ice, Water, Land, Atmosphere and
provide a specific example of how these systems are connected to one another
Land, water and atmosphere are very popular choices for habitats. Land is use full with all the food and prey walking around many places to hide. Birds can transition. in the atmosphere you can see very far and can find prey easily. water has lots of life and lots of nutrients. these three habitats have lots of interaction by prey and predator relationships.
hope this helps.
How is the proportion of hydrogen to helium in the Sun's core changing over time?
Answer: The percentage of the helium will increase with the decrease in the percentage of the hydrogen.
Explanation:
The conversion of the hydrogen into helium occurs by the nuclear fusion of the hydrogen atoms. This process reduces the hydrogen density and reduces the energy production inside the core region. Typically, in the core region of the hydrogen is converted into the helium by nuclear fusion. Four hydrogen atoms are collectively fuse to form one atom of helium. This process involves the production of heat energy.
anyone wanna help I'm stuck?
answer asap plz i need this for my a