The mass extinction that took place at the end of the Mesozoic era was the 5th largest mass extinction that gave way for the Cenozoic era.
What is the Mesozoic era ?The Mesozoic era is the era that spanned from 252 to 66 years ago and means middle life. Thus was the period of dinosaurs and their existence gave way or the evolution and dominance of mammal life on earth.
As this period includes the
Triassic, Jurassic, and Cretaceous Periods,Hence is also called the age of reptiles that later developed into the age of mammals.
Find out more information about the Mesozoic era.
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What part of your brain connects to the spinal cord? A. Medulla B. Cerebrum C. Cerebellum D. Right hemisphere
Answer:
The cerebellum connects to the spinal cord.
Explanation:
1. What kind of boundary or zone is shown in the image below?
O A Subduction zone
O B. Divergent boundary
O C. Collision zone
O D. Transform boundary
Divergent boundary is the type of boundary or zone depicted in the image.
What is divergent boundary?In plate tectonics, a diverging boundary, also known as a divergent plate boundary, is a linear structure that exists between two moving tectonic plates.Rifts are formed by divergent boundaries within continents and develop into rift valleys over time.A diverging border is formed when two tectonic plates diverge.Earthquakes frequently occur along these boundaries as magma (molten rock) rises from the Earth's mantle to the surface and solidifies to form new oceanic crust. Divergent is the movement of two plates away from each other. Molten mantle rock erupts along the opening, forming new crust. The earthquakes that occur along these zones, known as spreading centers, are small.To learn more about divergent boundary, refer to:
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Which gas makes up 78 percent of our atmosphere? It can be used by plants only when transformed by bacteria or lightning.
oxygen
nitrogen
hydrogen
carbon
This part of the nucleus is the "noodle soup" form of DNA.
helppp
Answer:
I think it's chromosome.
Explanation:
A chromosome looks roughly like an X, but it does not maintain it's form. IT floats around and stuff. That's why I think it's chromosome.
What does mitosis produce?
Four cells with the same number of chromosomes as the parent cell.
Two cells with the same number of chromosomes as the parent cell
Four cells with half the chromosomes of the parent cell.
Two cells with half the chromosomes of the parent cell.
Answer:
Two cells with the SAME number of chromosomes as the parent cell.
Explanation:
Mitosis produces ONE exact copy of a cell's chromosomes (thus, only two cells)
Meiosis produces FOUR half chromosomal cells (sex cells/gametes).
Which of the statement about thermal pollution is not true?
a.
Its effect can be sudden or long term.
b.
It is caused by human activities and natural processes.
c.
It increases the oxygen holding capacity of water.
d.
It alters the natural conditions of aquatic habitats.
Answer: C
Explanation:
got a 90 on the quiz but correct if wrong
Answer:
It’s C. It increases the oxygen holding capacity of water
Explanation:
A, B, and D are all true
How is active transport different from passive transport?
A Both active and passive transport occur within plant cells, but only active transport occurs within animal cells.
B. Passive transport uses energy to move materials across a cell membrane against a concentration gradient, while active transport moves materials across a cell membrane in the direction of a concentration gradient, without using energy.
C.Active transport uses energy to move materials across a cell membrane against a concentration gradient, while passive transport moves materials across a cell membrane in the direction of a concentration gradient, without using energy.
D. Both active and passive transport occur within animal cells, but only active transport occurs within plant cells.
The body of a lichen actually consists of two organisms. An alga and a fungus. The green alga provides food for the fungus through photosynthesis, while the fungus protects the alga and keeps it moist. This type of relationship is known as:
•Symbiosis
•Parasitism
•Decomposition
•Predator-prey
Answer:
symbiosis
Explanation:
it's symbiosis because the fungus and alga are on the body of the lichen, and is providing benefits for one another. This could easily be misinterpreted as parasitism, but that would be when an organism is inside the host and is providing harm rather than goods.
The Solar System is made up of gas, dust, and then was put together in a unique way. For planet Earth, all of the objects around us are made up of solid material. What best describes the area we are in?
Group of answer choices:
Asteroid Belt
Gas Giant Planets
Terrestial Planets
Kuiper Belt
Answer:
Terrestial Planet
Explanation:
Earth has a rocky surface like other planets such as Mars, Mercury, and Venus.
Scott has to memorize 25 words.He had memorized 15 out of 25 words.What will the answer's be in a fraction?
A 10\25
B 11\25
C 7\25
D 8\25
since he memorized 15, he has only 10 left. so it should be 10/25
Answer:
Read below
Explanation:
If they're asking for the remaining amount of words to memorize, he needs to memorize 10/15 words.
Can someone help me pleasee:(
Answer:
Add some iodine to a beaker containing the sample. If starch is present, the colour of the solution will turn blue-black.
Explanation:
4. What are the benefits of these plants and whom are they helping?
Plz helpp
Which compound has the highest fuel value ? Why?
Answer:
Hydrogen gas has the highest calorific value of 150 KJ/g among all the fuels. So, hydrogen gas is considered to be an extremely good fuel.
Explanation:
Answer:
Hydrogen has the highest fuel value. I hope I helped
CAN SOMEONE HELP ME ON 3
Answer:
The foxes would have brown fur all year long.
Explanation:
The foxes would have brown fur all year because the change in the environment will not occur. If the change not occur in the climatic conditions, then the foxes did not change the colour of the fur so the brown colour remains for all year long. The colour of fur changes when the change in climate occurs so if there is no change in the climate so change occur in fur colour of foxes.
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Due to climate change, places that used to be colder are now warming up, allowing new invasive species to establish themselves. What is one way that warming conditions are beneficial to invasive species?(1 point)
Warm weather allows animals to travel farther and longer because they do not need to hibernate for winter.
Warming leads to longer life spans for the animals because none die due to exposure to the cold.
There is more food and shelter available since the growing season is year round.
If the location used to be too cold for non-native species, it is now warm enough to allow them to exist.
(Q1)An introduced species is not necessarily harmful to the environment; an invasive species has a negative effect.
(Q2) the number of species in a community
(Q3) If the location used to be too cold for non-native species, it is now warm enough to allow them to exist.
(Q4) It reduces biodiversity by reducing successful mating in native species.
(Q5) Large because it has led to several significant changes, including new invasive species and loss of natives.
Explanation:
i just did the quick check
Warming conditions are beneficial to invasive species because if the location used to be too cold for non-native species, it is now warm enough to allow them to exist. Option D is correct.
What are invasive species?When species move and establish in a new area, out of their original distribution range, they might be considered exotic or invasive, according to their
• reproductive rate,
• population growth, and
• interaction with native species.
When a new species stablishes and overgrow in a new area, negatively affecting native ecosystems dinamics, they are considered invasive species.
The introduction of invasive species has ecological, economic, socio-cultural consequences.
In the new areas, these species have less environmental pressure and better conditions than in their origin area -fewer predators, more resources, better nitches-.
These factors favor their establishment because they are adapted to surviving under harder conditions.
They interact with native species by
Competing for resources such -water, place, radiation, exposure, shelter, food, etcetera-.Predating on native species, consuming a wide diversity of prey items, and in many cases, there are no native species that may prey on them.They provoke significant damages in the structure of native ecosystems, causing severe damage in endemic species.
They produce ecological imbalances in the trophic chains and the dynamics of communities. Invasive species are uncontrollable.
Areas that get warmer due to climate change provide a propicious environment for invasive species to stablish and overgrow.
Temperature is not a limmiting factor any more for these species, so they can move and stablish in these areas.
Warming conditions are beneficial to invasive species because if the location used to be too cold for non-native species, it is now warm enough to allow them to exist.
Option D is correct.
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Smallpox is a virus that causes a rash that then turns into painful blisters. The last known case of smallpox was in 1977. What is the best explanation for the eradication of smallpox?
People are exercising more than they used to.
Genetic testing determines who is more prone to smallpox.
There was an increase in antibacterial products.
An effective vaccine was developed.
Answer:
An effective vaccine was developed
Explanation:
(I actually learnt about this is history!)
Smallpox was around 75-100 years before 1977, and people continued to die from it especially when there were severe outbreaks (thousands of people lost their lives). The main technique for vaccination was to make a small cut in the patients arm or wrist, and then to rub a smallpox scab into the open wound (inoculation). However this was not as effective as it sometimes, brought infections into the wound, but the success rate was still pretty high.
Edward Jenner was convinced that there could be a more effective way of vaccinating people against the smallpox. Jenner discovered (from a milk maid!), that those that have been infected with cowpox won't catch small pox, as they are from the same family. Instead of small pox being the vaccine, Jenner used weakened cowpox pus instead. This was much effective as the side effect of having cowpox mild, and the patient made a full recovery.
Jenner put this cowpox vaccine in injections so that an open wound is not needed.
By the 1850's the vaccine was made compulsory, but many were against it: still believing that miasma (foul air) was the cause of the small pox. It was made compulsory or face a fine in the mid 1950's, hence small pox was eradicated by 1977
Hope this helps!
Answer:
A
Explanation:
All you need is in the photo
ASAP
Answer:
step 2.
looks like this is a MAPS test and you arent supposed to be asking for Help on these
Where is primary succession most likely to occur?
O A. In forest that has been clear-cut
B. In an area where floodwaters have retreated
C. In a forest that has been burned
D. In an area where a glacier has retreated
SUBMIT
Answer:
D.
Explanation:
Primary succession happens when there is an area that is essentially incompatible with inhabiting life, experiences a growth in colonies of bacteria starting a new ecosystem.
Question 14 plz help due in 2 min will mark brainlest
Answer:
the frequency of the wave is 2 hertz
Explanation:
Frequency is defined as the number of cycle of waves that occur in one second.
Here the total number of cycle is equal to 10
The total time in which these 10 cycles occur is equal to 5 seconds
Now, mathematically frequency is equal to
where is equal to number of cycles
and t is time
Putting the given values in above equation we get -
hertzs
Cuales otras situaciones mas visto con el uso del celular que demuestre que no lo usan de forma racional. Enumera e ilustra 3 de esas situaciones
La respuesta correcta para esta pregunta abierta es la siguiente.
Las situaciones más comunes en las que los estudiantes usan el teléfono celular de la manera incorrecta son las siguientes.
-Se la pasan perdiendo el tiempo jugando sus juegos de video.
-Se la pasan viendo videos de sus series favoritas.
-Se la pasan escuchando música.
-Se la pasan ch*teando gran parte del tiempo.
-Se la pasan en las redes sociales, entrando a las páginas de los demás.
Todas estas actividades los distraen y no les proporcionan nada productivo. Les quitan el tiempo y no les aportan nada que valga la pena.
Por esa razón, tanto en casa como en la escuela, padres y profesores deben ser muy estrictos en monitorear el uso que los hijos le dan al teléfono celular.
It is best to say that most human sources of air pollution result from _______. a. forestry management b. fuel burning c. heating devices d. vehicle exhaust
It is best to say that most human sources of air pollution result from fuel burning.
It is best to say that most human sources of air pollution result from fuel burning. Thus, option B is correct.
What is air pollution?
Air pollution is a type of pollution in which the air get polluted by different pollutants present in the air and the air gets polluted and the main cause of pollution is burning fuel as well as smokes coming out from the vehicles.
Environmental change has been known as the change or the disturbance of the climate which has been most often causes due to the human behavior, human activity or the natural ecological processes.
Environmental change has been consists of many factors, such as the natural disaster, human interferences, or the animal interactions. It has been also included the physical change.
In environmental change the natural systems has been transform the sun's energy into the living matter and cause the changes by cycling material through geological, biological, oceanic and atmospheric processes.
Therefore, It is best to say that most human sources of air pollution result from fuel burning. Thus, option B is correct.
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all you need is in the photo
ASAP
Answer:
The Third One
Explanation:
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Why do cells need to replicate their DNA?
Answer:
Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell. ... Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.
Explanation:
DNA is the genetic material, which is found in every living cell. The DNA is made up of a pentose sugar, nitrogenous base, and phosphate backbone.
DNA is a genetic material that transmits the information from parent cell to daughter cell using DNA replication.
DNA replication is an essential process in which the daughter cells inherit information from the parent cell.
Cell division is a process through which a DNA copies its genetic material and delivers it to the newly forming daughter cells.
The genetic information in the daughter cell must contain the same set of rules and instructions to carry out the vital processes. The information is present in the original copied form of DNA from the parent.
Thus, DNA replication is necessary for the continuity of life and similar genetic information presents the daughter cells.
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A dam is built in a remote area to provide electricity to nearby towns.
What is an unlikely effect of the dam? help!!!
Answer: option D decreased aquatic life upstream from warmer temperatures.
Explanation:
Answer:
increased fertility of the land downstream
Explanation:
I did the test
please answer fast . i need a description of the "cell body" for a project that i need to turn in today but i don't know what to write please help me.
A species of organism has survived in a mild environment for thousands for years. Suddenly, the climate changes and the area becomes a cold and barren tundra. Which of the following traits might help the species survive?
A-short neck to help keep heat inside the body
B-thick fur to keep the organism warm
C-small size so the organism requires less food
D-all of the above
The trait that might help the species survive is ; ( B ) Thick fur to keep the organism warm
Tundras are barren land with harsh weather conditions such as extreme cold. and the most important factors any species that lives in a tundra is shelter and insulation.
For the species to survive in Tundra they need to keep warm because certain species can survive without food for long periods. To keep warm the species will have to develop a thick fur and a larger body size.
Hence we can conclude that the trait that might help the species survive is thick fur to keep the organism warm.
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Help!! asap If answer is correct and fast you will get brainliest
Answer:
mRNA to proteins
Explanation:
what happens during the krebs cycle and the electron transport chain
Explain why the use of the term “theory” in science is different from the use of the word “theory” in everyday language.
Answer:
In everyday language a theory means a hunch or speculation. Not so in science. In science, the word theory refers to a comprehensive explanation of an important feature of nature supported by facts gathered over time. Theories also allow scientists to make predictions about as yet unobserved phenomena".
Explanation: