Answer:
Written below.
Explanation:
Coral and fish communities showed dramatic declines from 1977 to 1996 due to massive harbor construction and suboptimal land management practices on the watershed. More recently, corrective measures in the form of watershed stabilization and fishing regulations have been implemented.
Coral reefs are endangered by a variety of factors, including natural phenomena such as hurricanes, El Niño, and diseases; local threats such as overfishing, destructive fishing techniques, coastal development, pollution, and careless tourism; and the global effects of climate change—warming seas and increasing levels.
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1. James Naismith
2. 1891
3. City College of New York
Why are ORGANS classified?
Answer:
An organ is a group of tissues with similar functions. ...
A given organ's tissues can be broadly categorized as parenchyma, the tissue peculiar to (or at least archetypal of) the organ and that does the organ's specialized job, and stroma, the tissues with supportive, structural, connective, or ancillary functions.
Explanation:
Sickle cell anemia is a recessive trait (aa) which causes a red blood cell disorder in which there aren't enough healthy red blood cells to carry oxygen to the body. Individuals with the genotype AA have normal red blood cells. Those individuals who are heterozygous for the trait usually have no symptoms of sickle cell disease, but carry the sickle cell trait and can pass it on to their offspring. However, those individuals who carry the sickle cell trait have some protective advantage against malaria, making this a common genotype in malaria prone areas. The graph illustrates the frequencies of two genotypes, AA and Aa, over many generations. Select ALL the conclusions you can draw from the graph provided.
A) There appears to be random mating between genotypes.
B) There is no selective advantage for one genotype over another.
C) This graph probably represents a population in a malaria-prone area.
D) The population reached equilibrium for these traits at about generation 35.
E) Sickle cell disease has died out of this population and will most likely not return.
Answer:A is your answer 2020 edg
Explanation:
The conclusion which can be drawn from the graph is that there appears to be random mating between genotypes.
What is a Graph?This is defined as the pictorial representation of data in an organized manner.
The graph shows that there is random mating between the genotypes due to the non-uniformity observed thereby making option C the most appropriate choice.
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Which has more inertia?
A: A feather
B: A grain of sand
C: A boulder
Answer:
C
Explanation:
Newton's 1st law of motion states: More Mass = More Inertia. Less Mass = Less Intertia. The boulder has more mass, meaning it's got more intertia.
What happens when a light beam passes from air into water? Select all that app
the light wave slows down in water
refracted light bends in the water
some of the light is reflected off of the surface
total internal reflection
the light wave speeds up in water
Answer:
Some light is reflected off of the surface of the water
BRAINLIEST TO FIRSDT CORREDCT
If the forces on an object are balanced, what can be said about the forces?
1 The forces have a net force greater than zero.
2 The forces are both equal only.
3 The forces are equal and opposite.
4 The forces are both opposite only.
Answer:
2 they are equal
Explanation:
you went to move a 41 kg bookcase to a different place in the living room. if you push with a force of 65 N and the bookcase accelerates at 0.12 m/s2 what is the coefficient of kinetic friction between the bookcase and the carpet?
Answer:
the force of friction = fk = (uk)n = 402(uk)
the net force acting to accelerate bookcase = ma = (41)(0.12) = 4.9 N
the {assumed horizontal} push force = 65 N
so
65 - fk = 4.9
fk = 65 - 4.9 = 60 N
uk = 60/402 = 0.15 <= ANS
What behavior of light proves that it is a wave? Hint: will this ONLY happen because light is a wave, or could it also be true of fast moving particles? Select all that apply. *
Interference between two or more light waves
Reflection of light
Absorption of light
Redshift and blueshift
2 Physic Questions For 20 Points ✨
1. Pick a planet (other than Earth) and describe 5 characteristics that you know about it. Be as specific as possible.
2. What are various features of the moon and how did they form?
All answers need an explanation
Sometimes people refer to Mars as the Red Planet. Because of the rusty iron in the earth, it is red. Mars features weather, polar ice caps, canyons, volcanoes, and seasons just like Earth. Its atmosphere, which is composed of carbon dioxide, nitrogen, and argon, is extremely thin. These define Mars' characteristics.
These are some of the characteristics of the moon, which is the only natural satellite of Earth and the nearest huge celestial body. It is a spherical rocky body that revolves around Earth in a somewhat eccentric orbit at a mean distance of around 384,000 km (238,600 miles), perhaps with a tiny metallic core. It has a 1,738 km (1,080 miles) equatorial radius.
What is planet ?A celestial body inside the Solar System that meets the following criteria is referred to as a "planet": (a) it must be in orbit around the Sun; (b) it must have enough mass to overcome rigid body forces and take on a hydrostatic equilibrium form that is almost circular; and (c) it must have cleared the area in and around its orbit.
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4) i dont know if i am right so if I am not plz help me out HELP ASAP I NEED HELP
Answer:
The moon gets less light from the sun
Explanation:
As you see in the diagram the moon is moving farther away from the sun that means it's moving into the earth shadow.
What is the role of the nervous system?
Which parts of the body make up the central nervous system?
Name the two main categories of the nervous system.
How do the muscular, skeletal, and nervous systems work together to maintain homeostasis?
What do sensory neurons do?
What do motor neurons do?
Nervous System Video: Please answer each question by filling in the blanks, using the words from the bank below.
Word Bank: brain, instincts, interpreted, organs, reflexes, spinal cord, senses
The central nervous system includes the _______ and _______.
Signals from _______ and the body's _______ are received by the brain and the spinal cord.
Once signals are processed and _______ by the central nervous system, a response is sent back to the body.
A central nervous system is also responsible for programming _______ and _______.
Paraplegic Will Walk Again with Exoskeleton at the World Cup Video:
What animal did scientists study to create the brain–machine interface?
What does the exoskeleton use to power its movements?
What is the importance of this research?
An atom of nitrogen contains seven electrons. Describe the number of
electrons in each energy level in an atom of nitrogen.
Answer:
Two of the electrons are in the first energy level while the other five are in the second energy level.
Explanation:
.
An atom of nitrogen has 2 electrons in first energy level and 5 electrons in second energy level.
What is an energy level?Electrons present in an atom revolve in different orbits which are stationary states and are also called as energy levels. The energy levels are numbered as integers which are also called as principal quantum numbers.
Energy of the stationary state is given as E= -R
1/n² where R
is the Rydberg's constant. When an electron is excited, and it moves from lower to higher energy levels there is absorption of energy, while when it moves from higher energy level to lower energy level it radiates or gives out energy in the form of radiation.
They can also be defined as the distances between electron and nucleus of an atom . Electrons present in K energy level have least energy .Energy level diagrams are studied to understand nature of bonding , placement of electrons in orbits and and elemental behavior under certain conditions.
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Help with 3 and check the other ones please :(
Answer:
number 3 The wind because the wind has strong pressure which causes to change peoples directions in where they are going
Explanation:
hope this helped by the way i think you answered b and 4 i don't know if this is a test and i sent this at the wrong time :(
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ILL GIVE BRAIYIST
True of false: Radiant energy reaches the earth in the from of both visible and invisible electromagnetic waves.
Answer:
TRUE OR FALSE : ) IT'S TRUE
EXPLAIN:
Radiation
All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat. Radiant energy spreads out from its source in all directions. ... GAMMA RAYS have more energy than XRAYS, Radio waves, microwaves and ultraviolet waves all have longer wavelengths than visible light. Both X rays and gamma rays have higher frequencies than ultraviolet rays.
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Compare and contrast heat and temperature. Cite examples from the readings to support your comparison. Also cite examples from what you may already know to support your comparison.
Answer:
The term "heat" refers to a type of electricity. Joules are the units of measurement. The kinetic energy of an object's particles, as well as the number of particles, affect its temperature. The average kinetic energy of the particles in a material is defined as temperature.
Explanation:
A cyclist turns a corner with a radius of 50m at a speed of 10m/s. What is the cyclist's acceleration?
Answer:
2 m/s^2
Explanation:
a = v^2/r
a = (10m/s)^2 / 50m
a = 2 m/s^2
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Leave a like and mark brainliest if this helped
A cyclist turns a corner with a radius of 50m at a speed of 10m/s. The cyclist's acceleration is 2 m/s².
What is acceleration?The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is acceleration. The net acceleration that objects get as a result of the combined action of gravity and centrifugal force is known as the Earth's gravity, or g. It is a vector quantity whose strength or magnitude is determined by the norm and whose direction correlates with a plumb bob.
a = v²/r
a = (10m/s)² / 50m
a = 2 m/s²
A cyclist turns a corner with a radius of 50m at a speed of 10m/s. The cyclist's acceleration is 2 m/s².
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What do organisms need in order to reproduce? This is Science Btw
Answer:
Energy. They need energy.
Explanation:
Anatomy & physiology
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The statement that is false when describing serous and mucous membranes is that serous membrane always, while mucous membranes always produce mucose fluid.
What is the difference between serous and mucous membranes?Serous membranes usually line closed cavities within the body, for example, the pericardial cavity. These membranes secrete a serous or watery fluid.
On the other hand, mucous membranes are thicker, and the line surfaces of the body are exposed to the external environment, for example, the respiratory tract. These membranes secret mucus but sometimes they can secret liquids, an example is the conjunctiva.
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I don't know if I am right so if I am not right can you plz help me
An astronaut floating in space throws a wrench forward with the force of 10 N.
How much force does the wrench apply to the astronaut?
A. greater than 10 N
B. less than 10 N
C. zero; the wrench does not apply a force
D. exactly 10 N
The wrench applies greater than 10 N force to the astronaut. The correct option is A.
What is Newton's third law of motion?Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.
When the astronaut throws the wrench forward with a force of 10 N, the wrench will apply an equal and opposite force of 10 N to the astronaut in the opposite direction.
Here other options are,
Option B. Less than 10 N is not true because the force applied by the wrench to the astronaut is equal and opposite to the force applied by the astronaut to the wrench, which is 10 N.
Option C. zero; the wrench does not apply a force is not true because the wrench is exerting a force on the astronaut in the opposite direction to the direction in which the wrench is thrown.
Option D. exactly 10 N is not true because the force applied by the wrench to the astronaut is equal and opposite to the force applied by the astronaut to the wrench, which is 10 N, and the two forces act in opposite directions.
Therefore, the force applied by the wrench to the astronaut is greater than 10 N.
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The beam in a cathode ray tube is moved by an electric force. What did
scientists infer about atoms from this experimental result?
O
A. Atoms are small particles that cannot be destroved or divided.
O
B. Atoms have a dense, positively charged center.
O
C. Electrons have more energy the farther they are from the nucleus.
O
D. Atoms are made up of smaller particles.
The beam in a cathode ray tube is moved by an electric force. what scientists inferred about atoms from this experimental result is that atoms are made up of smaller particles. This is further explained below.
What is an atom?Generally, The fundamental of chemistry is the atom. It's the smallest unit of matter that can be split without releasing electrically charged particles.
In conclusion, Scientists deduced from this experimental result that atoms are formed up of smaller particles.
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which material would you use as the metallic core of an electromagnet?
Milk carton assessment graphic
Group of nails assessment graphic
Wooden dowels assessment graphic
Can of cola assessment graphic
Answer:
group of nails assessment graphic,
Explanation:
What type of device is a coal-fired power plant?
A. A heat pump that uses heat to do work
B. A heat pump that uses work to move heat
C. A heat engine that uses work to move heat
D. A heat engine that uses heat to do work
A coal-fired power plant is a type of heat engine that uses heat to do work. So, the correct option is D.
What is meant by a power plant ?A power plant or power station is defined as a facility designed for producing electrical energy from various other forms of energy.
Here,
A coal-fired power plant is a type of power plant, which is used for the production of electricity by using fuels such as coal, oil, etc.
The coal-fired power plants are the most common type of power station. In these power plants, the main burning materials used are the fossil fuels. The coal is pulverized and then burned into a coal-fired boiler. Then, the boiler water is converted into steam using a heat engine. As a result, this steam is used for the spinning of turbines.
Hence,
A coal-fired power plant is a type of heat engine that uses heat to do work.
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If earth receives more energy than it spends back to space, what can we expect to happen?
A ) The temperature on earth will decrease
B ) The temperature on earth will increase
C ) The temperature on earth will stay the same.
D ) earths energy budget will be balanced.
2. If a earth receives more energy than it emits, what would you expect to happen
A ) The temperature on earth will decrease
B ) The temperature on earth will increase
C ) The temperature on earth will stay the same.
D ) earths energy budget will be balanced.
ANSWER : A.. The temperature on earth will decrease
12.13) PLZ HELP ASAP
I don't know if I am right or wrong
How does the average speed of the atoms in a substance compare to the average speed of the atoms in a substance with a lower temperature?
Answer:
yes it does
Explanation:
What is Newton's Second Law of Motion?
Group of answer choices
A. Gravity is equal to mass times acceleration
B. Force is equal to mass times inertia
C. Force is equal to mass times acceleration
D. E = MC squared
HELPP
Answer:
C.
Explanation:
If u really need it, just comment.
What does it mean that a material transmits waves?
Waves will stop and transfer energy when they hit the material.
Waves will pass through the material.
Waves will bend and change their direction slightly when they hit the material.
Waves will bounce off the surface of the material.
It means that a material transmits waves when the waves bend and change their direction slightly when they hit the material, which is the third option as there are different types of waves, such as X-rays and gamma rays, and they have different properties.
What is the significance of the waves?Waves are significant because electromagnetic waves are used in many areas of physics and technology, and waves like microwaves, infrared, and visible light are used in many technologies such as radio, communications, spectroscopy, etc., the waves are also useful in the field of quantum computing and in the medical field, etc.
Hence, it means that a material transmits waves when the waves bend and change their direction slightly when they hit the material, which is the third option as there are different types of waves, such as X-rays and gamma rays, and they have different properties.
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A rocket burns fuel at a rate of 249 kg/s and exhausts the gas at a relative speed of 2 km/s. Find the thrust of the rocket. Answer in units of MN.