Answer:
Mass extinction occur when the environment is not favourable.
Explanation:
Mass extinctions occur on the earth when there is sudden change in the environmental conditions for an organisms that is not good for the survival of that particular organisms so they extinct from the earth surface. The example of mass extinctions are dinosaurs. These dinosaurs were extinct due to change in their environment that decreases the availability of food for them so due to no available food, the dinosaur extinct from the earth.
Besides the interaction between animals and plants, what other factors may be involved in the carbon and oxygen cycles?
Answer: .co2
Explanation: co2
The other factors which are involved in the carbon and oxygen cycles are air, ground, respiration, and photosynthesis.
Which factor contributes to the carbon cycle?
Explanation: Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere.
How do plants and animals interact with the carbon cycle differently from one another?Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too. Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood, and leaves decay bringing the carbon into the ground.
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Which does not describe the relationship because nucleus and the electron cloud of an atom?
Complete Question:
Which does not describe the relationship between nucleus and the electron cloud of an atom?
Group of answer choices.
A. the electrons move faster than the particles in the nucleus
B. the masses of the nucleus and electron cloud are balanced
C.the charges of the nucleus and electron cloud are balanced
D.the electron cloud takes up much more space than the nucleus
Answer:
B. the masses of the nucleus and electron cloud are balanced
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.
Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
An electronic cloud can be defined as a group of negatively charged electrons circulating around an atomic nucleus. It is typically referred to as valence electrons.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others.
Both the protons and neutrons of an atom of a chemical element have a mass of 1 atomic mass unit (amu) while an electron have an approximate mass of 0 atomic mass unit (amu).
Hence, the masses of the nucleus and electron cloud of an atom cloud are not balanced.
The cell membrane of a retinal photoreceptor contains sodium channels that at rest (in the dark) are normally ________ and have a resting potential that is ________ compared to other neurons.
Answer:
open; depolarized
Explanation:
The photoreceptors, i.e., rods and cones, are specialized neurons located in the retina. These cells convert sunlight into electrochemical signals which are interpreted by the central nervous system. The cGMP-gated channels that are expressed in photoreceptor plasma membranes have a major role in this process by regulating the flow of sodium (Na+) and calcium (Ca2+) ions in the outer side of the membrane via changes to cyclic guanosine monophosphate (cGMP) levels which are induced by light. In the dark, high cGMP levels maintain channels in an open state, thereby allowing the passage of Na+ and Ca2+ ions to flow into the outer segment of photoreceptors in order to maintain them in a depolarized state.
The student comes up with the following hypothesis: Hypothesis: If I increase the
temperature of the water, then the rate of cellular respiration will increase because the
yeast will be more active. For the lab report, what should the student state as their
problem/question they are trying to answer
Answer:
what happens to the rate of cellular respiration when the temperature of the water increases.
Explanation:
I'm not 100% sure but i think that, that is at least close to what you are looking for.
An inherited trait is
A. a characteristic determined by and organism's genes
B. a skill developed through practice
C. an organism's place in the food web
an organism's relationship to its parents
Answer:
pretty sure the correct answer is C
Helppppppppppppppoo meeeeeeee
PLS HELP BIG GRADE 5. Water stored in a reservoir is used to generate electricity as it flows down and into a river. The river flows to the ocean, where it evaporates to form clouds. Rain falls from the clouds into streams that flow into the reservoir.
Which location of the water has most potential energy? Assume the amount of water in each place is the same. These are the locations: 1. where it enters the river from the reservoir, 2. when it is in the ocean, 3. when it is in the reservoir, and 4. when it is in the clouds.
1. Where it enters the river from the reservoir.
2. When it is in the ocean.
3. When it is in the reservoir.
4. When it is in the clouds.
Explain your answer.
Answer: Water falls from a reservoir through a channel to a turbine. The water turns the turbines, which allows the generator to make electricity.
Explanation: Hydroelectricity can be defined as the generation of electricity by utilizing the speed of water stream in a reservoir of water. The high speed water current is used to move the water turbine the energy produced in the turbine can be used to generate electricity by the generator.
What is another name for spongy bone?
Answer:
Cancellous bone or trabecular bone
Explanation:
Another name for spongy bone is the Cancellous bone or trabecular bone.
Answer:
trabecular bone
Explanation:
What are the early signs of osteoarthritis?
▪️Chapter - The fundamental unit of life
▪️Quality answer needed
▪️No Copied answer ( This type of answer will be reported at spot)
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Answer:
The difference between Prokaryotic cell and Eukaryotic cell are;
[tex]\begin{array}{lll}&\underline {\text {Prokaryotic}}& \underline {\text {Eukaryotic}}\\ \\ \text {Nuclear \ membrane \ and \ nucleus} & \text {No \ true \ nucleus \ or} & \text {Has \ a \ true \ nucleus} \\& \text {nuclear \ membrane} & \text {nucleoli \ and \ nuclear \ membrane}\\\\ \text {Membrane \ bound \ cell \ organelle} & \text {None &Present} \\\\ \text {Chromosome \ number \ and \ shape} & \text {One} & \text {Several, more \ than \ one} \end{array}[/tex]
Explanation:
Prokaryotic cells
The plasma membranes surround prokaryotic cells, however, within their cytoplasm, there are no organelles bound to the membrane and there is no nucleus in the prokaryotic cell which differentiates it from the eukaryotic cells
Eukaryotic cells
Eukaryotic cells also have plasma membranes, ribosomes and cytoplasm. Eukaryotic cells also have membrane-bound nucleus, membrane bound organelles, such as chloroplast, mitochondria, endoplasmic reticulum, and Golgi apparatus which together differentiates it from a prokaryotic cell
The government of a flood prone region wants to implement some measure to reduce risk of floods. Which method is likely to reduce the risk of floods in that region
Answer:
The correct answer is "preservation of wetlands".
Explanation:
Wetland are areas of lands that are saturated with water, usually comprised by marshes or swamps. Preservation of wetlands help to reduce the risk of floods because wetlands temporarily store and slow the release of stormwater. It has been reported that areas where wetland have been lost, the chances of flood increases by as much as 80 percent. The government of a flood-prone region would likely reduce the risk of floods by preserving its wetlands.
Which best describes what solar systems are comprised of? stars, planets, moons, asteroids, and comets galaxies universes planets, moons, comets, and asteroids
Answer:
The correct answer is star,moon,planets,moons, astroid and comets galaxy universes planets,moon, comets and astroids.
Explanation:
The above answer is correct
Describing Periods on the Periodic Table
Which statement accurately compares the trends in atomic number and atomic mass in the periodic table?
The atomic number increases from left to right, while the atomic mass increases from right to left.
O The atomic mass increases from left to right, while the atomic number increases from right to left.
O Both the atonic mass and the atomic number increase from left to right.
O Both the atomic mass and the atomic number increase from right to left.
What results will the scientist most likely obtain when placing drops of the indicator on the leaves?
Answer:
The scientist will be most likely obtain when placing drops of the indicator on the leaves by resulting dark purple.Explanation:
dark purple is the answer.
Considering that the indicator is Phenolphthalein, then it will remain colourless. If it is methyl orange, then it will become red. If it is universal indicator, then it will become blue to dark blue. Because leaves are slightly acidic.
What is the purpose of meiosis I and II ?
A) To convert one type of cell into another
B) To produce new body cells
C) To produce games, or sex cells
D) To make offspring
What are the products of photosynthesis?
O A. C2H4O2 and H20
O B. C2H4O2 and 02
O C. C6H1206 and H20
O D. C6H1206 and 02
:)
Answer:
c
Explanation:
am not really sure but the c6h12o6 actually stands for glucose
Name the gas. 1. Used in respiration 2. Produced in respiration 3. Used in photosynthesis 4. Produced in photosynthesis
Answer: Oxygen
Explanation:
Explanation:
The fixation or reduction of carbon dioxide is a process in which carbon dioxide combines with a five-carbon sugar, ribulose 1,5-bisphosphate, to yield two molecules of a three-carbon compound, glycerate 3-phosphate, also known as 3-phosphoglycerate.
MAY IT HELPS U MATE
which is considered a chemical mutagen
What is the process of mitosis?
Answer:
duplication of 2 dioploid identical sister cells
Explanation:
inter-phase, pro-phase, meta-phase, ana-phase, telo-phase, cytokinesis
The best place to find an oligodendrocyte?
Each oligodendrocyte forms one segment of myelin for several adjacent axons.Oligodendrocytes are found only in the central nervous system, which comprises the brain and spinal cord.
With 600 islands, the largest freshwater lake in Europe is Lake _________
Answer:
Lake Ladoga is the answer
During the Cardiovascular Function Labster simulation, cardiac output did not increase as much as oxygen consumption rate (which increased 8x), what is the most likely mechanism that could allow increased oxygen delivery by the cardiovascular system
Answer:
An increase in the rate of oxygen that has been removed from hemoglobin could increase the supply of oxygen by the cardiovascular system.
Explanation:
Hemoglobin is a protein, present in the cardiovascular system, whose main function is to remove oxygen from the lungs and take it to the tissues of the human body. Therefore, the more oxygen is removed from the hemoglobin, the greater the oxygen supply. This applies even in the situation presented in the question above, where cardiac output did not increase in the same way as oxygen consumption. In this case, if oxygen consumption is high, the removal of oxygen from the hemoglobin must be increased to supply this consumption.
When deciding on new environmental policies
and laws, which term is used to describe the
comparison between benefits and costs of
human activities?
Answer:trade-off
Explanation:trust me bro i just got it right
Consider two children with the same two parents. Would you expect them to have the same sets of chromosomes? Explain why or why not.
Answer:
Some of the same
Explanation:
Well, if one is a boy and one is a girl they might look similar but they will have a lot more different chromosomes than if they were both the same genders, but they still wouldn't be exactly the same because everyone, even identical twins have chromosomes differences, even if you cant see them. My final reason is that one sibling might get more genes from one parent than the other.
Why does a buzzer starts to buzz as soon as the circuit is complete?
Answer:
The circuit is complete again and the the electric charges start to flow. ... Depending on the distance between the electromagnet and the nail, the rigidity of the rubber band and the strength of the electromagnet, the circuit can be broken and completed several times a second. Hence you hear a buzzing sound
Answer:
Depending on the distance between the electromagnet and the nail, the rigidity of the rubber band and the strength of the electromagnet, the circuit can be broken and completed several times a second. Hence you hear a buzzing sound.
Explain why spring tides are higher than all other tides.
Answer:
In both cases, the gravitational pull of the sun is 'added' to the gravitational pull of the moon on Earth, causing the oceans to bulge a bit more than usual. This means that high tides are higher and low tides are lower than average. These are called 'spring tides.
Explanation:
Fun facts:
Why are the spring tides the highest tides each month? Twice each month, the moon, sun, and Earth are aligned, so the pulling forces are combined to produce the highest and lowest tides, called spring tides.
I need help with all the questions and filling out the punnet square
Answer:
Umm are you supposed to be in summer break
Explanation:
Because I am in summer break
Which part of the brain is indicated by the arrow below?
Pons
Cerebellum
Cerebrum
Medulla oblongata
Answer:
Pons
Explanation:
The Pons of the brain is indicated by the arrow below.
Pons is located in front of cerebellum, composed up nerve fibers make a bridge between he two hemispheres of the cerebellum of brain. Thus option A is correct.
What are the different parts of brainstem ?
The brain stem have different parts such as midbrain, pons, medulla oblongata.
The midbrain present between the cerebrum and pons.
The nuclei and cerebral tracts are present, where nuclei act as a relay stations for both ascending and descending nerve fibers, mainly involve in auditory and visual reflexes.
Pons is present in front of cerebellum, the nerve fibers make a bridge between the two hemispheres of the cerebellum.
Medulla oblongata is the most interior part of the brain stem, continuous with the spinal cord, the outer portion is called white matter and the central portion have grey matter.
Thus option A is correct.
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100 points
what is 1 times 1 in Biological perspective
Answer:
1
Explanation:
Answer:
is answer 3
Explanation:
never even heard of Biological perspective
How Many Years Ago Was Parachute Invented?????
If YOU WANT BRAINLEST THEN ASAP
Answer: 4,000 years ago
The parachute was invented 4,000 years ago, when Chinese observers noticed that air resistance slowed free-falls. Legend states that a safe jump was made from a granary using two bamboo hats. In the 800s, Abbas Ibn "Armen" Firnas jumped off a tower in Cordova (Iberian peninsula) using a large cloak like a wing.
