Answer: To know if a document is a primary source, check to see when the document is published, if it is an autobiography of a person, a diary, a letter, or the documents happen at the time of the event.
The competition between two organisms can be seen if there is only 1 source of food or habitat space and they're competing against each other for the food or habitat.
There is cooperation between two organisms if they are helping each other with resources or alarming each other if there is danger.
Predation between two organisms happen when one organism hunts the other organism for food.
Answer:
The guy above me is right it helped me answer to my question in edge for 2020 I got it correct but I didn't put exatcly what he put so I wouldn't be copying him or her.
Explanation:
Describe the function of each organelle.
Nucleus
awnser:
The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle. The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material.
Answer:
The nucleus is the central and most important part of an object, it controls and regulate the activity of cells. The nucleus also carries the genes.
Explanation:
what is the best example of a point source pollution
Answer:
Waterborne pathogens in a local river.
Explanation:
Waterborne pathogens are the diseases that are transferred through water and are the pathogenic agents (often live organisms) that cause disease in the host. Chemical, biological, and other contaminants can all lead to water contamination.
What are the point source pollutions?Point-source Pollution is described as pollution that originates from a single, recognizable source, such as an industrial facility or sewage treatment plant output pipe.
Nonpoint-source pollution is pollution that doesn't come from a single source, or point.
Various signs of waterborne infections can occur. The most typical symptoms of a waterborne sickness are typically diarrhea and vomiting, but there may also be issues with the skin, ear, respiratory system, or eyes.
Therefore, waterborne pathogen are the best example of point source pollution.
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does photosynthesis occur in mushroom.why?
Answer:
no
Explanation:
because it is fungi and it doesnt have chloroplast (which is needed for photosynthesis)
What is the primary function of the body system
Answer:
Nervous, Integumentary, Muscular, Hematopoietic.
NEED HELP ASAP FIRST PERSON TO CORRECTLY ANSWER WILL GET MARKED BRAINLIEST
4. What statement best describes the composition (parts that make up) of an
ecosystem?
a. Animals and rocks
b. Bacteria and fungi
C. Sunlight and water
d. Biotic and abiotic factors
Answer:
D
Explanation:
This includes all things living and not.
why these animals have so much blubber
Answer:
Animals that have blubber live in cold habitats, for example, Antarctica. The blubber, or fat, protects them from the snowy and icy environment. Walrus' are a great example. Without blubber, their insides would get too cold, and they could freeze to death.
hope this helps
Answer:
Depends on which animal
Explanation:
some animals need lots of fat "excess skin" to survive in a certain environment or to adapt to a new habitat
Birds in a desert climate survive on soft parts of cactus. Scientists observed that during a drought, manyof the birds died. The ones that survived had larger beaks and were able to crack open and eat hardseeds that would ordinarily not be used. What trait would you expect to see in the next generation?
Answer:
Larger beaks. This question refers back to Darwin's theory of Natural Selection. "Survival of the fittest" if the birds that had small beaks all died, the only birds that would be left would be the ones with large beaks.
Explain in detail the inter-relationship
between the food chain and food
web.
Answer:
A food web consists of many food chains. A food chain only follows just one path as animals find food. eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. A food web shows the many different paths plants and animals are connected.
is Wood Block a mineral or non-mineral
Answer:
Non-mineral
Explanation:
Wood is not a mineral. Minerals are rock and other types, but wood is not a rock.
Eukaryotic cells are able to trigger the release of material from secretory vesicles to the extracellular space using a process called exocytosis. An example of materials commonly released this way is
Answer:
hormones
Explanation:
An example of materials commonly released this way is hormones. These are chemical messengers that are sent to the pituitary gland where they are released directly into the bloodstream. The blood then carries the hormones to different organs and tissues of the body in order to exert their specific function which varies depending on the specific type of hormones being secreted.
Drag the tiles to the correct boxes to form correct pairs. Not all tiles will be used.
Match each example given to the type of scientific concept.
theory
hypothesis
law
observation
If the amount of daylight
increases plant growth, then
plants will have higher rates
of growth during the summer.
arrowBoth
The outer layer of the Earth is
divided into plates that move
due to convection currents
under the surface.
arrowBoth
For every action or force
in nature, there is an equal
and opposite reaction.
arrowBoth
Answer and Explanation:
If the amount of daylight increases plant growth, then plants will have higher rates of growth during the summer. hypothesis. The outer layer of the Earth is divided into plates that move due to convection currents under the surface. theoryFor every action or force in nature, there is an equal and opposite reaction. law A hypothesis is a scientific conjecture, not verified that requires corroboration. It is a possibility, but not a fact. A hypothesis must express what is expected to occur in a perfectly comprehensive manner. There must be a logical relation between variables. It must be objective. The researcher suggests a hypothesis in order to predict what is going to happen. There are different kinds of hypotheses: descriptive, correlative, differentiative, or causative. A law is an affirmation based on repeated experimental observations, it is not that might describe one aspect of a natural phenomenon. This means that it is corroborated by facts, and not only by logic. There is a relation cause-effect. The scientific theory is a conceptual framework used to explain facts or phenomena and to make predictions. The theory is fundamental to science because it allows scientists to organize and understand observations. The construction of a theory begins with a hypothesis. The scientist believes that a certain phenomenon occurs in a certain way and so he/she performs observations under the scientific method to prove that his/her hypothesis is valid or not valid. The systematization of the observations as well as of the empirical data collected might derive in a scientific theory that can explain the analyzed phenomenon. A scientific theory is a knowledge that was contrasted in several ways.
59:52 In an oil spill, why does the oil not mix with the seawater?
Answer:
The oil does not mix with the water since it has a lower density so it floats on it
Explanation:
What is a trophic cascade?
how do we know energy is transferred in an energy pyramid?
Answer:
While food chains and food webs show relationships between organisms, and energy pyramid quantifies the amount of energy transferred from one trophic level to the next, when one organism eats another, wherein approximately 10% of the energy available is retained and passed along.
A commercial advertising a diet pill says it is scientifically proven to help you lose weight. It is recommended by a doctor who observed that some of his patients lost weight after taking the pill for a week. Why is this claim considered pseudoscience?
Answer:
No it hasn't been recommended by a doctor.
Explanation:
This is considered pseudoscience because there is no proof that it has been scientifically proven.
What trophic levels contain more energy? please help
In which country is the population likely to be increasing most rapidly?
a. Kenya
b. Germany
C. Australia
d. China
Answer:
A
Explanation:
Kenya has the most rapid increasing population
Only green organisms have chloroplasts, so do green frogs and toads have chloroplasts??
Answer:
Chlorophyll is a cell that comes from plants not animals.
Explanation:
Chlorophyll is the part of chloroplast and is the light absorbing pigments which provide green color to the plants, but chloroplast traps the solar energy, which is the site of photosynthesis and other chemical reactions and works as the ‘powerhouse of the cell’ like mitochondria.
How do stories differ from scientific explanation A) Stories avoid presenting bias B) stories are based on imagination C) stories are based on evidene D) stories are always negative This is for lil sis
Answer:B
Explanation:
A p e x
Stories differ from scientific explanations by the fact that they are based on imagination. Thus, the correct option is B.
What is a Scientific explanation?A scientific explanation may be defined as a type of explanation that utilizes numerous observations and measurements in order to explain the fact that we see in the natural world on the basis of accurate and valid evidence.
Stories are based on imagination, while scientific explanations are based on evidence. It can not be said that stories are always negative. It may not remarkably true that stories are avoided presenting bias.
Scientific explanations always match with logical comprehension as well as the suggested evidence with respect to the fact in a systematic way.
Therefore, stories are based on imagination is that fact that differs stories from scientific explanations. Thus, the correct option is B.
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Which statement is most likely to apply to a cell that has DNA within its cytoplasm? . . .It lacks ribosomes. . .It has membrane-bound organelles. . .It is multicellular. . .it performs all functions for the organism.
Answer:
D. It performs all functions for the organism.
Explanation:
got it right lol
A cell that has DNA within its cytoplasm is It lacks ribosomes.
What is a cell that has DNA within its cytoplasm?
In prokaryotes, the DNA (chromosome) is in contact with the cellular cytoplasm and is not in a housed membrane-bound nucleus. In eukaryotes, the DNA takes the form of compact chromosomes separated from the rest of the cell by a nuclear membrane.
Thus, option "A" is correct.
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What is the importance of studying fossils? * A. To provide information about current life forms and current environmental conditions B. To provide information about how life and environmental conditions may have changed C. To provide information about how previous life forms would exist in current environmental conditions D. To provide information about how current life forms would exist in previous environmental conditions
Answer:
The answer D
Explanation:
Paleontologists find and study fossils all over the world, in almost every environment, from the hot desert to the humid jungle. Studying fossils helps them learn about when and how different species lived millions of years ago. Sometimes, fossils tell scientists how the Earth has changed.
smallest particle that make up matter is?
In eukaryotic cells, DNA is packaged with proteins into structures called chromosomes. What advantage do chromosomes provide the cell?
Answer:
it is a haredity material which help in transfor of characters
Explanation:
Answer:c They ensure equal division of genetic material when a cell divides
Explanation: I just took the test and it is right !:)
identity
QUICK CHECK
temperature of the water
Choose the correct measuring device for gathering
data from the list of tools in the drop-down menu.
heartbeats per minute
volume of liquid
*
time
DONE
distance across the pond
Intro
Answer:
34
Explanation:
What are nucleic acids
Answer: It is the overall name of DNA and RNA. They have Nucleotides.
5. Why
can
plants perform photosynthesis, but most animals cannot?
I
When you first see something, the cornea projects an image onto your:
A. optic nerve
B. occipital lobe
O c. retina
D. iris
Answer:
C
Explanation:
Retina
HELLLPPPPPP MEMMEMEMEME
Answer:
B, Kilograms.
Explanation:
We can compare this to another problem, to help you understand.
Chase is a puppy and doesn't weight a lot. Let's review the different metric units that we use for measuring weight. A milligram is for very tiny things such as a bean or a dust particle. A gram measures slightly heavier things like a paperclip or a pencil. A kilogram is used for things with definite weight, like a kitten or a dog.
The vet would have measured Chase in kilograms.
Hope this helped. :)
A) Identify and describe the four levels of protein structure.
Answer:
here is the answer from google
Explanation:
Answer:
primary, secondary, tertiary and quaternary.
Explanation:
because the primary structure is made up of amino acids that make up the polypeptide chain.
______ is a part of all organic compounds, which make up living things.
Answer:
Carbon.
Explanation:
Carbon is a part of all organic compounds.