2. Define chain reaction.
Answer:
a chemical reaction or other process in which the products themselves promote or spread the reaction, which under certain conditions may accelerate dramatically.
the self-sustaining fission reaction spread by neutrons which occurs in nuclear reactors and bombs.
a series of events, each caused by the previous one.
"an article in one publication sets off a chain reaction in the media"
Explanation:
describe how dna can be used to classify organisms
Scientists can use DNA sequences to help determine if they have discovered a new species. Scientists can also compare DNA sequences from different organisms and measure the number of changes (mutations) between them to infer if species are closely or distantly related.
What phenotypes are possible for the turtles?
Answer:Reptile
Explanation:im not sure
Which option describes how Darwin’s journey affected science?
Darwin came up with an explanation for how organisms change through artificial selection. His idea that current domesticated animals could be improved was based on his observations.
Darwin came up with an explanation for how organisms changed over time through natural selection and the theory of evolution. His ideas were based on the observations that he made during his journey.
Darwin came up with natural selection based on his observations on his journey. The theory of evolution was formed later by different scientists.
Darwin came up with cures for many diseases that affected sailors on long voyages. These cures allowed for longer voyages and changed the world.
Answer: option 2 and 3 both are closely related and correct ,but the best one according to me is option
What is as3xual reproduction?
1.when an organism mutates and becomes a different organism
2.when male and female parts unite to create a zygote
3.when an organism reproduces without combining male and female cells
4.when a male s3x cell splits into smaller parts
Label the 3 layers of the sun
Answer:
middle layer is core, second layer is radiative, and the outer layer is convection
Explanation:
Both the liver and kidneys are organs of the excretory system. how do the two organs work together to complete a task? a. the kidneys convert nitrogenous wastes into urea, and the liver filters urea from the blood. b. the kidneys filter urea from the blood to make urine, while the liver filters urea from blood to make lymph. c. the liver converts nitrogenous wastes into urea, and the kidneys filter urea from the blood. d. the liver filters urea from the blood and passes it to the kidneys, which eliminate the urea in urine.
Answer:
a.
Explanation:
The kidney converys Nitrogenous waste into urea, and the liver filters the urea from the blood.
Please Help I Need Help
Explanation:
symbitotic: close ecological relationship between two or more organisms that live in close contact
mutualism is a symbiotic relationship in which both organisms benefit;
parasitism is a symbiotic relationship in which one organism benefits while the other organism is harmed
commensalism one organism benefits, the other neither benefits nor is harmed
:commensalism: answers will vary; lesser long-nosed bat/saguaro cactus; human and pet dog
Mutulism: answers will vary, human and eyelash mite, clownfish.and sea anemone
parasitism answers will vary, caterpillar and wasp, human and tapeworm
Which act regulates the handling of
tailings from mining operations?
A. Endangered Species Act
B. Solid Waste Disposal Act
C. Occupational Health and Safety Act
Answer:
this is my answer The MMDR ActExplanation:
this my explanationThe MMDR Act empowers the central government to issue directions to the State governments to ensure sustainable development and exploitation of minerals to reduce adverse air, ground, water and ambient noise impactsAnswer: B. Solid Waste Disposal Act
Explanation:
the potential source of land pollution in your locality
Answer:
Littering
Explanation:
People dispose little anyhow and anywhere
Energy waves from large earthquakes can move through large portions of the earth. these waves
are called
What is the most important reason to control the conditions of an experiment?
Oto make the experiment easier to repeat
Oto reduce the amount of data that must be recorded
O because this is necessary for graphing the data
O because this is necessary for the data to be valid
Answer:
because this is necessary for the data to be valid
Explanation:
if we where to test how much light a plant needed to grow its best we cant water them differently because that eill also have a impact on a plants health and growth
D 5. What is ecosystem diversity? the number of different genes in an ecosystem O the number of different ecosystems in an area the number of different niches in an ecosystem the number of different nutrients in an ecosystem
Answer:
Option 2
Explanation:
Ecosystem diversity refers to the number of different ecosystems in an area.
All of the traits below are characteristic of the class Mammalia except which?
A.Four-chambered heart
B. Milk production for young
C.Oviparous birth of young
D. Hair covering the body
All of the traits below are characteristic of the class Mammalia except C.Oviparous birth of young as they do not lay eggs.
What are the Oviparous ?Animals that reproduce via way of means of laying eggs are referred to as oviparous animals. In those animals, the manner of each fertilization and embryo improvement does now no longer arise within the mother. Birds and frogs are examples of oviparous animals.
Most mammals are viviparous, giving beginning to stay young. However, the 5 species of monotreme, the platypuses and the echidnas lay egg.
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Answer:
C. Oviparous birth of young
Explanation:
The vast majority of mammals are viviparous, and only a couple are oviparous.
The chart below shows some information about two scientists.
Name of
Details about scientist
Views about the solar system
scientist
Nicholaus
Studied Aristotle's theory of homocentric spheres and
Ptolemy's mechanism of epicycles
Suggested that Earth revolved around the
sun in spherical orbits
Copernicus
Johannes Kepler
Studied astronomy and incorporated religious beliefs into Suggested that the orbits of planets were
his works
elliptical
Which of these statements best explains why Copernicus and Kepler had different views about the solar system?
O They came from different cultures.
O They liked to disagree professionally.
O They had different goals and interests.
O They misinterpreted scientific facts and data.
The best statement that explains why Copernicus and Kepler had different views about the solar system is that they had different goals and interests, which is the third option, as Copernicus and Kepler had different perspectives on the solar system.
Copernicus, a Polish astronomer, was interested in the simplicity and elegance of the universe and sought to find a more accurate model of the solar system. He proposed that the sun, not the earth, was at the center of the solar system, which was a revolutionary idea at the time. On the other hand, Kepler, a German astronomer, was more focused on the mathematical and physical aspects of the solar system and used his observations of the planets to develop the laws of planetary motion.
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Is there any type of ecological relationship between wolf and moose populations on Isle Royale? If not, explain why not. If so, what is the relationship?
USE CLAIM, EVIDENCE, AND REASONING
The Prey-Predator relationship is the type of ecological relationship between wolf and moose populations on Isle Royale.
What do you mean by Ecological relationship?The Ecological relationship may be defined as the interaction between the members of one species with respect to the members of the other in response to food, shelter, and space.
Moose are herbivores and the prey of wolfs. It is clearly seen in the graph that when the population of wolves increases, the number of moose decreases. It states that wolfs feed on moose.
Therefore, the Prey-Predator relationship is the type of ecological relationship between wolf and moose populations on Isle Royale.
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How are green algae related to land plants? (Select all that apply.)
□ both have chlorophyll
□ both have a cell wall
□ both have chloroplasts
□ both have a nucleus
Answer: Both have chlorophyll and both have chloroplasts
Hope this helps you!!!
Answer:
Both have chlorophyll
Both have a cell wall
Both have chloroplasts
Both have a nucleus
Explanation:
(*) Sorry for my late answer but I hope this helps others that are looking for this.
100% in the test ;)
2. Describe the role of the following in maintaining a constant body temperature in humans:
(c) The thyroid gland:
Answer:
The thyroid produces hormones that are able to influence how much the blood vessels dilate. In turn, this affects how much heat can escape the body.
22. List the three parent nuclides of the Ntural decay series.
Answer:
The parent nuclides are uranium- 238 , uranium- 235 , and thorium- 232 .
Explanation:
2. What do humans require freshwater for and what will happen if we deplete freshwater resources?
Answer:
We need freshwater for basic needs, such as bathing, and drinking. Withtout freshwater the world will die off, as we need water to survive. if we deplete the world will start losing water, therefore sending world into a panic.
Explanation:
select the correct answer from each drop down menu
complete the sentence about sea floor spreading
seafloor spreading is caused by ___ (divergent, convergent, transform) boundaries and results in ___ (more continental land, mountains on land, mid ocean ridges)
Answer:
divergent,mid ocean ridges
Explanation:
the seafloor diverge from each other causing the land to go thinner and thinner and thinner and make an opening between the floors and continue to move away from each other until they touch a more firm land to be able to stop, then the mid ocean ridges come between the floors where inside there is water and on the side there are the ridges
How do you think water can become polluted?
Which rna carries amino acids to the ribosome and helps translate a coded message?.
Answer:
TRNA.
Explanation:
TRNA carries amino acids to the ribosome. It has three nitrogen bases, and it basically finds the corresponding codon on the MRNA, and attaches to it.
Line breeding disadvantages
Answer:
Higher offspring mortality. Shorter lifespan. Increase in genetic diseases. Reduced “genetic potential” (ability to improve a trait)
Hi! I need some help with this. (Btw ignore the crumbled paper, I was having a breakdown.) Thank you!!
Answer:
Explanation:
Answer:
Explanation:
1. Producers make their own food, so option C.
2. Consumers eat others cuz they can't make their own food, so option G.
3. Herbivores (like cows) eat producers (like grasses, plants etc.), thus option E.
4. Carnivores (like tigers) eat other consumers (like cows, deers, even baby tigers) so option H.
5. Omivores eat everything (plants or animals) like humans thus option J
6 Decomposers (like fungi) break down dead stuff so option A.
7 Biotic means living things, thus option F
8 Abiotic is non-living things, thus option B.
9 Mutualism means both animals benefit from helping each other out, option D.
10 Parasites (like leech) harm the host and benefit themselves, thus option i
11 Commensalism means one benefits but the other one is not benefit or harmed, option S
12 P
13 L
14 R
15 N
16 T
17 M
18 Q
19 K
20 O
Not 100% sure on 12, 18-20 but everything else should be right.
many marine organisms depend on upwelling to bring nutrients to surface. how might El Nino affect a fisherman's way of life
The upwelling of seawater refers to the rising up of the deeper and cold water towards the surface of the sea. This cold water is comprised of the valuable and essential nutrients and as they move upward, it provides these nutrients to the marine organisms.
What is El Nino?El Nino is usually defined as the large-scale changes in the climate that occurs due to the interaction between the ocean and the atmosphere. It leads to the episodic rise in the temperature of the sea surface, which typically occurs in the central and the eastern part of the central Equatorial Pacific.
The occurrence of El Nino leads to the reduction of the upwelling of deep-sea cold water. During the time of this harsh climate, the fishes die or they sometimes migrate into some other places where they can obtain their food. Due to this, the fisherman cannot go fishing.
Thus, the occurrence of El Nino directly affects a fisherman's life.
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The 1918 Influenza epidemic killed between 50 million and 100 million people worldwide. The epidemic happened near the end of World War I. More people died from the influenza epidemic than from the war. Which of the following explains why this virus was so deadly worldwide?
The following explains why this virus was so deadly worldwide was the cause of its worldly The 1918 Influenza epidemic killed among 50 million and a hundred million humans worldwide.
Which of the subsequent explains why this virus become so lethal worldwide?In the United States, the flu's toll become a good deal lower: a 1. five percent decline in GDP and a 2.1 percentage drop in consumption. The decline in financial hobbies mixed with expanded inflation led to huge declines withinside the actual returns on shares and short-time period authorities bonds.
This become truly the case with the influenza pandemic of 1918-1919, which become one of the worst contagion crises withinside the records of humankind.
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Select the correct answer from each drop-down menu. the carrying capacity of a wildlife reserve is 570 individuals for a particular species of rodents. if the area of the reserve is extended, the carrying capacity is likely to . during the summer, a fatal disease began killing individuals. the carrying capacity of the reserve will therefore .
If during the summer, a fatal disease began to kill individuals. the carrying capacity of the reserve will therefore be increased.
What is carrying capacity?The carrying capacity of an environment is the maximum population size of a biological species that the environment can sustain indefinitely, taking into account
foodhabitatwaterand other needs available in the environment.With this information, we can conclude that if during the summer, a fatal disease began to kill individuals. the carrying capacity of the reserve will therefore be increased.
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The outermost layer of earth's atmosphere is
A.troposphere
B.startosphere
C.mesosphere
D.thermosphere
Answer:
the answer is D. Thermosphere
One of the significant adaptations to prevent drying out in the land environment was the development by vascular plants of (a)
Answer:sun eating plant
Explanation: