Change to ecosystems occurs both slowly and quickly.
True
False

Answers

Answer 1
True
Drastic biological events may happen such as a volcano eruption or a hurricane. It can also happen overtime. For example, a species dying off due to lack of food and/or global warming.

Related Questions

Explain why conflict avoidance does not help in sustaining positive relationship​

Answers

Answer:

Avoidance is not healthy for sustaining the positive relationships as the ignorance or avoidance can cause the damage between the relationships of the people. The maintenance of the relationship among people can be hampered by avoidance. It can make the other people feel neglected. That can cause a failed relationship.

Explanation:

CAN FISH SURVIVE ONLY IN WATER WITH DISSOLVED OXYGEN?

Answers

Answer:

Oxygen dissolves into water from two sources: the atmosphere and from plants in the water. kills fish from oxygen depletions can range from “partial” to “total”. In a partial kill the dissolved oxygen level gets low enough to suffocate sensitive species and large fish, but many small fish and hardy species survive.

Explanation:

I hope this helped you

What is different about the gases you inhale and exhale? Be specific.

Answers

Answer:

you inhale oxygen and exhale carbon dioxide.

hope this helps and please mark brainliest :)

You inhale oxygen it goes through 2 different passageways that connects down your trachea while carbon dioxide exits as waste through the same passageways

The cell theory states that all cells arise from existing cells. Which scientist first
determined this part of the cell theory?
A. Hooke
B. Schleiden
C. Schwann
D. Virchow

Answers

Answer: C. Theodore Schwann

Explanation: The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made of cells. The second part states that cells are the basic units of life.

Please help me name each letter and match it to the definition.

Answers

Answer:

1. B. Medulla oblongata contains cardiac, respiratory, vasomotor and reflex centers.

2. A. Hypothalamus is the major regulator of ANS

3. D. Occipital lobe is the location of visual cortex.

4. F. Sensory areas are primary site responsible for perceiving cutaneous sensory sensations and proprioception.

5. E.Motor areas directs conscious motor movement

6. C. Cerebellum - coordinates movement by comparing intended movement with actual movement.

7. K. Corpus callosum allows communication between right & left cerebral hemispheres.

8. J. Frontal Lobe - Cognition, personality.

9. A. Hypothalamus - Contains hunger, thirst and thermoregulatory centers.

hello I am Iron-60 , the twin of Iron-56, how am different than my twin?

Answers

Iron-60 has 34 neutrons, that’s 4 extra neutrons that make the isotopes unstable to radioactive decay

Look at the following equation.
Na C02(s) + 2 HCl(aq) + 2 NaCl(aq) + CO2(g) + H2O(1)
What do the symbols in the equation mean?
(s) =
(aq) =
(g) =
(I) =​

Answers

S= solid (indicates that the substance is in a solid state), AQ=Water (indicates that the substance is dissolved in water - the aq comes from aqueous), G= Gas (indicates that the substance is in a gaseous state), L=liquid I hope this is right

Attitudes are ________
a. innate
b. generally positive
c. learned
d. unchangeable

Answers

maybe c sorry if it’s wrong

Place these events in the correct order of occurrence in the muscle contraction: End plate potential triggers an action potential Transverse tubules convey action potentials into the interior of the muscle fiber Acetylcholine binds to receptors on the motor end plate Calcium is released from the sarcoplasmic reticulum Ligand-gated channels open leading to depolarization Calcium ions bind to troponin, which then moves tropomyosin

Answers

Answer:

1. Acetylcholine binds to receptors on the motor end plate

2. Ligand-gated channels open leading to depolarization

3. End plate potential triggers an action potential  

4. Transverse tubules convey action potentials into the interior of the muscle fiber

5. Calcium is released from the sarcoplasmic reticulum

6. Calcium ions bind to troponin, which then moves tropomyosin

Explanation:

Acetylcholine (ACh) is a signaling molecule (neurotransmitter) that binds to receptors on muscle cells. This binding triggers the opening of ligand-gated sodium channels, thereby ions enter into muscle cells, which causes the depolarization of the sarcolemma and thus promotes the release of Ca2+ ions from the sarcoplasmic reticulum. The myoneural junction, also known as the motor endplate, is the site of synaptic contact between a motor axon and a skeletal muscle fiber. The endplate potential is the voltage that produces the depolarization of muscle fibers when ACh molecules bind to their receptors in the cell membrane. This depolarization spreads in the sarcolemma through transverse tubules (T tubules​) and thus generates an action potential. Finally, this action potential induces the release of Ca2+ in the sarcoplasmic reticulum, which activates troponin protein and induces muscle contraction.

A population of 1,000 healthy, at risk people is monitored for one year starting on January 1st, and the development of cases of chicken pox is noted. No one has chicken pox at the start of the investigation. Twenty people develop chicken pox on June 30th and forty people develop chicken pox on September 30th. Twenty-four people were lost to follow-up on March 31st, and twenty-four people were lost to follow-up on November 30th. None of those lost to follow-up had developed chicken pox prior to becoming lost. Assume that you can get chicken pox only once.

Required:
What is the cumulative incidence of chicken pox in this population during the one-year period from January 1st through December 31st?

Answers

Answer:

[tex]\mathbf{cummulative \ incidence = \dfrac{60}{1000}}[/tex]

Explanation:

We recognize that total occurrence equals new cases of disease over time divided by the number of people at risk at the onset.

Mathematically:

[tex]\mathbf{cummulative \ incidence = \dfrac{New \ cases \ of \ disease \ occurrence}{Number \ of \ population \ at \ risk \ at \ onset}}[/tex]

Given that:

Number of the population at risk = 1000 individuals

New cases during Jan 1 - Dec 31 = 60 because;

At 20 occurred on June 30 & 40 on Sept. 30) & no new cases were identified after that:

[tex]\mathbf{cummulative \ incidence = \dfrac{60}{1000}}[/tex]

I need help with this

Answers

Answer:

D

Explanation:

I graphed it

The radius is also 5 therefor it must =25

What does each region of the kidney have in it?​

Answers

Answer:

Outer cortex, Middle Medulla, and Renal Pelvis.

They all have a lot of Blood vessels(something they share in common).

Explanation:

The kidney is made up with three regions; the outer cortex, the middle medulla (with the renal pyramids) and the inner-most renal pelvis.

What is the speed of a runner who travels 20m in 10s?

Answers

Answer:

2m/s

Explanation:

speed =distance ÷time

What do you already know about the rotation and the revolution of the Earth?

Explain your Answer

Answers

Answer:

I already know that the earth rotates on its axis because of magnetic forces. I also know that the earth revolves around the sun because of the pull of the sun's gravity.


What is this tiny bird doing in this big guy's mouth? The plover bird is
picking the chunks of meat out of the crocodile's teeth. This helps the
crocodile's mouth stay healthy and be ready for its next big meal. What is
type of relationship is being described?

Answers

What are the options ?

After synapsis, chromosomes may swap segments in a process called translocation.
True
False

Answers

Answer:

false

Explanation:

During synapsis, chromatids of homologous chromosomes exchange segments in a process called crossing over. This rearranges genetic info. As this phase continues the chromosomes coil tightly and a spindle forms.

A prospective groom, who is not affected by cystic fibrosis (CF), has a sister with cystic fibrosis, an autosomal recessive disease. Their parents are also not affected. The brother plans to marry a woman who has no history of CF in her family. What is the probability that they will have a child with CF? They are both Caucasian and the overall frequency of CF in the Caucasian population is 1/2500 - that is, 1 affected child per 2500 (assume the population meets the Hardy-Weinberg assumptions).

Answers

Answer: In punnett square number 1, we see the cross between AA and aa, and the result is 100% Aa individuals, so there is 0% chances of haveing a child with CF. In punnett square number 2, we see the cross between Aa and aa and there is 50% chances of having a child with CF (aa genotype).

p = 0.98

q = 0.02

p² = 0.9604

q² = 0.0004

2pq = 0.0392.

Explanation:

Due to technical difficulties, the explanation has been attached as a word document.

You want to build a house in an area with a maximum amount of species diversity. For building the house you have to clear up to 3/4th of the forest cover. How do you think this will affect the water runoff?

Answers

Answer:

The runoff will increases.

Explanation:

The runoff will be adversely affected if the 3/4th of the forest cover is removed because forest cover lowers the intensity of runoff by absorbing most of the water. The construction of house will increase the runoff due to little vegetative cover for the absorption of water and more water will runoff on the surface that will leads to flood condition in the lower elevated region of that area. The vegetative cover of the forest helps in preventing the flood condition by absorbing the runoff water.

what is the function of phloem?

Take 50 Points​

Answers

it’s in charge of transport and distribution of the organic nutrients

Answer:

[tex]\huge\boxed{Answer\hookleftarrow}[/tex]

Phloem is the structural part of the plant that helps in the transportation of food materials from the green parts of the plants (leaves where the food is made) to different parts of the plants.

____________________

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If dogs has 78 chromosomes in each somatic cell, how many chromosomes does each dog sperm have?

Is it possible for 2 dog spend cells to simultaneously enter a dog egg? Why or why not?​

Answers

Answer:

1.Normal dog semen contains 300 million to 2 billion sperm. The quantity of sperm varies depending on the weight and size of your dog, with the bare minimum sitting at around 10 million sperm cells per pound of bodyweight.

2.yes because The heat cycle of the female lasts from 18 to 21 days. ... Eggs remain fertile for about 48 hours. ... Dogs mature sexually earlier than they do emotionally.

A scientist at a nuclear power plant spills toxic chemicals on her hand. The chemical exposure results in a mutation to the DNA within her skin cells. which of the following is the most likely result of the mutation to the scientist’s skin cells?

A. The damaged DNA spreads to every cell in the body

B. The size of the scientist’s skin cells decreases

C. The scientist’s offspring inherit the mutation from the affected cells

D. The sequence of amino acids with the affected cells is altered

Answers

Answer:

Explanation:

the answer is c

Name the two main compounds that are exhaled (breathed out) by humans as a result of Aerobic Cellular Respiration

Answers

Answer:

carbon dioxide and oxygen

Explanation:

Carbon dioxide is the waste product of cellular respiration that you breathe out each time you breathe. Blood picks up oxygen and releases carbon dioxide in the lungs. The opposite takes place in the cells where the blood releases oxygen and picks up carbon dioxide.

Name three benefits of keeping plants at home.

Answers

Answer:

Studies have shown that indoor plants...

Boost your mood, productivity, concentration and creativity.

Reduce your stress, fatigue, sore throats and colds.

Help clean indoor air by absorbing toxins, increasing humidity & producing oxygen.

Add life to a sterile space, give privacy and reduce noise levels.

The wings of butterflies and birds are ----------- structures because, although they are used for the same purpose (flight) they have very different structural compositions. Bird wings are made of bones and feathers while butterfly wings are made from chitin and are part of the insect’s exoskeleton.

Answers

Answer:

symetrical

Explanation:

Please answer I will give u brainliest

Answers

Answer:

stationary front

Explanation:

the correct answer is stationary front

Match the following terms to their definitions. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. Words can be used more than once. ResetHelp Diverging circuit Converging circuit Reverberating circuit Parallel after-discharge circuit 1. : One incoming axon triggers responses in ever-increasing numbers farther and farther along the circuit. 2. : May be involved in complex, exacting types of mental processing. 3. : Involved in control of rhythmic activities such as breathing. 4. : Involved in activating fibers of a skeletal muscle such as the biceps muscle. 5. : Different types of sensory input can have the same ultimate effect.

Answers

Answer:

1. Diverging circuit.

2. Parallel after-discharge circuit.

3. Reverberating circuit.

4. Diverging circuit.

5. Converging circuit.

Explanation:

A sensory system can be defined as components of the central nervous system (CNS) which comprises of the brain, neural tissues or pathways and sensory neurons responsible for sensory functions, perception and processing sensory informations such as sound, light, heat, etc.

Basically, the central nervous system (CNS) interprete the neural signals that are generated from stimuli that are detected by the sensory system. The five (5) main sense organs in the sensory system are: skin, tongue, ears, nose and the eyes.

Generally, the nervous system found in living organisms such as humans, comprises of two (2) major components or systems; a central nervous system (CNS) and a peripheral nervous system (PNS).

A neural circuit can be defined as a group of neurons in the body of a living organism which are interconnected by synapses to perform specific functions when they're activated.

There are four (4) main types of neural circuits used for performing specific neural functions in the body of a living organism, these includes;

1. Diverging circuit: one incoming axon triggers responses in ever-increasing numbers farther and farther along the circuit. For example, a neuron that stimulates thousands of cells such as sensory pathway to the central nervous system (CNS).

2. Parallel after-discharge circuit: may be involved in complex, exacting types of mental processing. For example, it used in reflex arcs, mathematics and logic.

3. Reverberating circuit: involved in control of rhythmic activities such as breathing and as such it's repetitive in nature. For example, short-term memory, sleep cycle, etc.

4. Diverging circuit: involved in activating fibers of a skeletal muscle such as the biceps muscle.

5. Converging circuit: different types of sensory input can have the same ultimate effect. For example, the regulation of the somatic motor neuron.

Which of these best predicts the length of time a star "lives" on the Main-sequence and the path it follows as it evolves over time?
its mass
its color
its name
its location

Answers

Answer:

its mass is the answer I just look up some research

the amount of electrical energy that can be generated by a hydroelectric power plants depends upon

Answers

Answer:

The amount of electricity a hydropower plant produces depends on two factors: How Far the Water Falls. The farther the water falls, the more power it has. Generally, the distance that the water falls depends on the size of the dam.

Explanation:

The amount of electrical energy that can be generated by a hydroelectric power plant depends upon the following factors:

The actual flow rate of water. The height of the water that falls.

What is a Hydroelectric power plant?

A Hydroelectric power plant may be defined as a renewable source of energy that generates electricity through the utilization of water from dams or diversion structures. Such types of plants are mainly used to transform hydraulic potential energy into electrical energy from water.

The actual flow rate and height of the water from it is falling demonstrate the amount of generated electrical energy. If the amount of water is present in excess quantity with a huge rate of flow and more the height of water in the hydroelectric power plant, it reveals that the generated electricity must be high under such circumstances.

Therefore, the rate of flow and height of water overall reveals the amount of electrical energy that can be generated by a hydroelectric power plant.

To learn more about Hydroelectric power plants, refer to the link:

https://brainly.com/question/8934285

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When cells break down food glucose molecules during cellular respiration, energy is

Answers

Answer:

when cells break down food molecules, some of the energy on the molecules is released as heat. Cells use much of the remaining energy to make ATP. When glucose is broken down during cellular respiration energy is stored temporarily in molecules of ATP.

Explanation:

In Drosophila, red eyes is wild-type and purple eyes are mutant. Full-size wings are wild-type and vestigial wings are mutant. Flies with wild-type pr pr vg vg genotypes were crossed with double mutant flies with a pr-pr- vg-vg- genotypes. The F1 flies had pr pr- vg vg- genotypes. The F1 flies with heterozygous genotypes were crossed with double mutant flies with a pr-pr- vg-vg- genotypes One thousand offspring were typed. This cross produced 430 red-eye, wild-type wing flies, 65 purple-eye wild-type wing flies, 60 red-eye, vestigial wing flies, and 445 purple-eye, vestigial wing flies. What is the distance between the loci for purple eyes and vestigial wings in centiMorgans (map units)

Answers

Answer:

Distance between genes 12.5 MU = 12.5 cM.

Explanation:

Due to technical problems, you will find the complete explanation in the attached files.

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