Answer:
There needs to be variations in population in order for natural selection to occur because the entire point of evolution by natural selection is only the best variations will survive. So if there were no variations then there would be no natural selection because the animal's survival rate would be the same no matter how many times they reproduce because there are no different variations being introduced into the species. However, if there are variations then the animal's survival rate could be impacted because of the variations, for example, white mice would be easier to find for predators on a dark surface, while a darker mice would be harder to find for predators on a dark surface, thus, allowing the darker mice to prevail as they have a higher survival rate and the species will slowly evolve into the darker mice. But, if there were no evolution, in this case, then no matter what happens, the white mice would not be able to evolve into a darker mice because there are no such thing as variation. That is why it is necessary for there to be variation in order for evolution by natural selection to occur.
Which of the following causes the change from day to night?
Answer:
^
Explanation:
The Earth orbits the sun once every 365 days and rotates about its axis once every 24 hours. Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.
Remove the roller bearing fastened to the shaft:
A. Dumplings in bearings.
B. Close the ring in the bearing or the ring in the bearing.
C. Close the ring in the bearing.
D. Roll out the outer ring of the bearing.
Answer:
B-Close the ring in the bearing or the ring in the bearing.
Explanation:
hope it's help
2. What characteristics of bougainvilla plant makes animals to be afraid? A. It has spores on its stem C. It has thorns on its stem B. It has spreading, feathery root stem D. It has light rounded waxy leaves
PLEASE HELP ME I REALLY NEED THE CORRECT ANSWER RIGHT NOW!!!!
Answer:
It has thorns on its stem
Explanation:
how does urbanization cause air pollution
.Answer:Concentrated energy use leads to greater air pollution with significant impact on human health. Automobile exhaust produces elevated lead levels in urban air. Large volumes of uncollected waste create multiple health hazards. Urban development can magnify the risk of environmental hazards such as flash flooding.
Explanation:
reproduction is not necessary for the continuation of species
Answer:
It is necessary.
Explanation:
If a member of a species doesn't reproduce, other members of the same species will become extinct.
How does the water cycle transfer energy through an ecosystem?
Answer:
Water also moves through the living organisms in an ecosystem. Plants soak up large amounts of water through their roots. The water then moves up the plant and evaporates from the leaves in a process called transpiration. The process of transpiration, like evaporation, returns water back into the atmosphere
Explanation:
my dad is a science teacher
Answer:
water gains energy in condensation and releases it in evaporation
In which of the following ways can albert reduce the resources he consumes
Answer:
where is option man?
please,send option also
Find the similarities or interesting facts about system of modern phones and human brain.
The human brain and that of the computer(Modern Phones) are similar is so many ways, bellow are some highlighted facts between the human brain and the computer
They used electrical signals to send messagesBoth transmit information.Both have a memory that can growBoth can adapt and learn.Both have evolved over time. Both need energy. Both can be damaged. Both can change and be modifiedBoth brains and computers are studied by scientists.Learn more about the human brain and computer
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I hate my biology teacher but he’s such a D.a.d.d.y
Answer: Dam
Explanation: Dammmmmmmmm
Identify the 4 factors that cells vary by.
Answer:
Different types of cells have different shape-shifting capabilities, depending on the specific function of that cell in the organism. Three general factors determine cell shape: the state of the cytoskeleton, the amount of water that is pumped into a cell, and the state of the cell wall.
Explanation:
If any questions, put them below.
If you have no questions, please have a great rest of your day/night!
Need help right now can’t figure it out
Answer:
[tex]\huge\boxed{Alkane.}[/tex]
Explanation:
The given compound is an alkane because all the bonds between carbon are single. Alkanes have all single bonds and are thus called saturated hydrocarbons.
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807The skeletal system of animals provides structure and support. Which cell part provides a similar function in a plant cell? a. pili b. large central vacuole c. Golgi apparatus
d. cell membrane
Answer:
b. large central vacuole
Explanation:
it maintains pressure against the inside of the cell wall, giving the cell shape and helps to support the plant.
Cells spend most of their time in what phase?
Answer:
A cell spends most of its time in what is called interphase
Explanation:
The __________________ is the tunnel that cuts through the external auditory meatus delivering sound to the ear drum or the _____________________.
Answer:
The auricle (pinna) is the visible portion of the outer ear. It collects sound waves and channels them into the ear canal (external auditory meatus), where the sound is amplified. The sound waves then travel toward a flexible, oval membrane at the end of the ear canal called the eardrum, or tympanic membrane.
Explanation:
Which symbol represents a hybrid
Explanation:
The three standard sex symbols are the male symbol ♂ and the female symbol ♀, and the hybrid symbol ×. They were first used to denote the effective sex of plants (i.e. sex of individual in a given crossbreed, since most plants are hermaphroditic) by Carl Linnaeus in 1751.
Which statement accurately compares these flashlights?
O A. The smaller flashlight has less inertia than the larger flashlight, so
it takes less force to change the motion of the smaller flashlight.
O B. The smaller flashlight has more inertia than the larger flashlight,
so it takes more force to change the motion of the smaller
flashlight.
C. The smaller flashlight has less inertia than the larger flashlight, so
it takes more force to change the motion of the smaller flashlight.
O D. The smaller flashlight has more inertia than the larger flashlight,
so it takes less force to change the motion of the smaller
flashlight
The smaller flashlight has less inertia than the larger flashlight, so it takes
less force to change the motion of the smaller flashlight.
Inertia is defined as the property of an object to resist changes in its velocity
when in motion. A larger or bigger body has more mass and inertia as it
requires more force to change the direction of the object.
The smaller flashlight has less inertia than the larger flashlight and hence
requires less force to change its motion due to its smaller size.
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At which temperature could air hold the most water vapor?
A. 2°C (36°F)
B. 24°C (75°F)
C. 35°C (95°F)
D. 13°C (55°F)
Answer: C: 35° (95°F)
Explanation: The hotter the temperature, the more water vapor air can hold.
muscle cell labelled diagram
Explanation:
Here is a diagram, let me know if this is what you needed.
What happens when black holes accrete matter too quickly?
Answer:
These objects are called quasars, or active galactic nuclei. However, most black holes are too compact to pull such material — which is mostly gas — in immediately. ... Eventually, the gas is moving so fast that it gets extremely hot and luminous, generating radiation that we can often see from Earth.
Explanation:
Which statement best identifies a central idea of this text?Issues with the Articles of Confederation"
The Maine Department of Transportation (DOT) has a fleet of roughly 400 plow trucks that are used to control snow and ice on approximately 8300 lane miles of Maine’s state roads. They usually plan on an average of about 30 treatable events in a winter. This includes the use of rock salt, salt brine and winter sand, a mix of sand and salt. Salt brine is used on roads and bridges prior to a storm to delay ice and snow from sticking to the roadway and is also used in plowing to fight the buildup of ice and snow throughout the storm. Rock salt helps keep roads safe when winter storms hit, reducing winter road accidents, but it can also have negative effects on plant life and aquatic ecosystems. What are the environmental effects of salting that must be mitigated? Select ALL that apply.A) Salt kills roadside plants. B) Salt builds up in roadside soil , changing its pH, preventing the growth of plants. C) Salt corrodes metals like automobile brake linings, frames, and bumpers, and can cause cosmetic corrosion. D) Elk, moose and sheep eat road salt causing "salt toxicosis" where they lose their fear of vehicles and humans, causing many fatal encounters. E) Salt doesn't evaporate, or otherwise get removed once applied, so it remains a persistent risk to aquatic ecosystems due to runoff or ground
Answer:
it is 736
Explanation:
me big brain
Salt builds up in roadside soil , changing its pH, preventing the growth of plant and Salt doesn't evaporate, or otherwise get removed once applied, so it remains a persistent risk to aquatic ecosystems due to runoff or ground are the environmental effects of salting that must be mitigated. That is option B and E.
The effects of road salting on the environmentRoad salting is a technique that is used to melt snow and ice during winter season. This keeps the streets and side sidewalks clear and prevents slick driving conditions.
The types of salt used for road salting include:
rock salt, salt brine,winter sand, a mix of sand and salt.The impact of road salting on the environment include the following:
Decrease in reproduction and growth of plants: This is because increase salinity are toxic to plants and as the concentration of these ions increases, the plant is poisoned and dies.Negative effect on aquatic ecosystems: This affects mostly the freshwater ecosystems as high levels of salt are very toxic to the aquatic organisms.Learn more about aquatic ecosystems here:
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The table shows the total number of posts made by the average registered user of a new social media app in the first week
after purchasing the app.
find the linear equation that models the data in this table.
Linear equations are used to represent relations that have constant rates
The linear regression equation that models the data in this table is [tex]\^y = 2.40476x + 0.33333[/tex]
Regression equation using a graphing calculatorTo calculate the regression equation, we make use of a graphing calculator.
Using the graphing calculator, we have the following data:
Sum of X = 28Sum of Y = 70Mean X = 3.5Mean Y = 8.75Sum of squares (SSX) = 42Sum of products (SP) = 101Formulating the regression equationThe regression equation is represented as:
[tex]\^y = b\^x + a[/tex]
Where:
[tex]b = \frac{SP}{SSX}[/tex] and [tex]a = MY - bMX[/tex]
So, we have:
[tex]b = \frac{101}{42}[/tex]
[tex]b = 2.40476[/tex]
Also, we have:
[tex]a = MY - bMX[/tex]
[tex]a= 8.75 - 2.4\times 3.5[/tex]
[tex]a= 0.33333[/tex]
Hence, the linear regression equation is:
[tex]\^y = 2.40476x + 0.33333[/tex]
Read more about regression equations at:
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When a person senses a stimulus, the information is sent to multiple parts of the brain for processing and then on to a motor neutron for a response resulting in a voluntary response is known as?
Answer:
For example, sensory neurons send information from the eyes, ears, nose, tongue, and skin to the brain. Motor neurons carry messages away from the brain to the rest of the body.
Explanation:
When the impulse reaches the end of the axon, chemicals are released and picked up by a neighboring neuron, causing the nerve impulse to continue. ... Your emotions, decisions, and physical actions all happen through nerve impulses traveling through neurons in your brain, spinal cord and nerves.
PLEASE HELP ME ANSWER THIS!!!!!
Outline a heart-healthy “plan” for a person’s whole life: in other words, provide at least two pieces of advice appropriate for a person interested in heart health across their lifespan. Discuss advice appropriate for newborns or very small children; young adults between 18 and 24 years of age; someone in their 40s; and someone over 65. Provide at least one piece of age-appropriate advice specific to the interests, activities, and general health of an average person in each age group.
A heart-healthy plan for everyone is to eat lots of fruits and vegetables. It's also important to eat low-fat dairy products.
The heart is a vital organ in the body as it keeps the circulation of blood. For children, they should be served fruits and vegetables everyday. They should also eat whole grains.
For adults, they should eat more fish and less red meat. They should also eat lots of fruits and vegetables. Nuts, beans, legumes, and low-fat dairy products are also important for the heart.
Learn more about the heart on:
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The ___________________ contains receptors for monitoring the position of the head.
Answer:
Vestibular Receptors
Explanation:
Located in the ear, only in the ear. When you are talking about position of other body parts this is called proprioceptors (sense positions of like arms, legs and other body parts).
Which group of elements is provided by air and water?
Answer: Over 95 percent of the dry weight of a flowering plant is made up of three elements—carbon, hydrogen, and oxygen—taken from the air and water. The remaining 5 percent of the dry weight comes from chemicals absorbed from the soil.
Explanation:
Aluminum is mined from the ground. Recycling aluminum cans decreases the need for mining bauxite. Paper can also be recycled. How does recycling paper preserve trees?
Answer:
Saving wood
Explanation:
It takes less water to break down waste paper than it does to break down wood. If paper recycling is used to the full potential, wood is only needed once to produce 5 cycles of paper which also means saving waste from landfill 5 times.
[answers included, 100% on assignment]
1. Compared to today’s corn plant, teosinte:
✔ (c) is shorter and has more branches.
2. About how many genes were involved in producing the dramatic differences between teosinte and modern corn?
✔ (b) 5
3. he gene for which of the following traits changed early in teosinte domestication and caused dramatic changes?
✔ (a) kernel covering
Answer:
C
B
A
Explanation:
Imagine that you have separated the cells of different sponges and mixed them up in a lab. Describe the experiment and your predicted results.
Answer:
2
Explanation:
Because if you add 1 to 8 you get 9 then subtract 9 by 7 then and your answer is 2
Answer:
Songes are mixed up in a cell bowl
Explanation:
differentiate between the chromosome theory of inheritance and the gene chromosome Theory
Answer:
The Chromosomal Theory of inheritance, proposed by Sutton and Boveri, states that chromosomes are the vehicles of genetic heredity. Neither Mendelian genetics nor gene linkage is perfectly accurate; instead, chromosome behavior involves segregation, independent assortment, and occasionally, linkage.