Answer:
It will take him exactly 12 weeks
Explanation:
If he already has 65 you subtract that from 245 and you get 180
You divide 180 by 15 to get the number of weeks and you get 12
A teacher performing a demonstration finds that a piece of cork displaces 24 mL of water. The piece of cork has a mass of 6 g. What is the density of the cork?
Answer:
0.25 g/cm³
Explanation:
Density is the ratio of mass to volume:
(6 g)/(24 mL) = 0.25 g/mL = 0.25 g/cm³
_____
1 mL = 1 cm³. Units of density in the cgs unit system are g/cm³.
1. Which of the following is NOT a major source of freshwater pollution?
A. Human and animal wastes
B. Industrial wastes
C. Wetlands
D. Agricultural chemical
in
2. Pesticides are most likely to be found in runoff from
B. Roads
C. Farm fields
D. Homes
E. Factories
3. What is an estuary?
A. A coastal inlet where fresh and salt water meet.
B. A tropical grassland
C. A river that flows into a larger river
D. A landform with high elevation and high relief.
Hi can y’all help me answer does just started 6th grade .. I will give you brainlest plz help
Pollution may be defined as any form of unwanted substances or impurities which are present in the atmosphere of the earth that harm the lives of living entities.
Human and animal wastes, industrial wastes, and agricultural chemicals are potent sources of freshwater pollution.
Pesticides are generally spread in the agricultural fields to protect the crop from pathogens and are most likely to be found in runoff from farm fields during the rainy season.
An Estuary is a mini-ecosystem in which freshwater meets the marine water near the sea.
Therefore, it is well described above.
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i am horrible at science. please help
breathing more deeply and frequently
Since diffusion is the primary method one celled organisms use for material transport, the ratio of____________ is an important factor for them
Answer:
uffff..... that's a tough one
NEED HELP PLEASE! Based on the figure, which of the following statements best describes the relationship between regions 1 and 2 of the protein?
A- Region 1 is hydrophilic because it interacts with the interior of the membrane, whereas region 2 is hydrophobic because it interacts with an aqueous environment.
B- Region 1 is hydrophilic because it interacts with an aqueous environment, whereas region 2 is hydrophobic because it interacts with the interior of the membrane.
C- Region 1 is hydrophobic because it interacts with the interior of the membrane, whereas region 2 is hydrophilic because it interacts with an aqueous environment.
D- Region 1 is hydrophobic because it interacts with an aqueous environment, whereas region 2 is hydrophilic because it interacts with the interior of the membrane.
The best description of relationship between regions 1 and 2 of the protein is region 1 is hydrophilic because it interacts with an aqueous environment, whereas region 2 is hydrophobic because it interacts with the interior of the membrane. Thus, option B is correct.
What is hydrophilic and hydrophobic?
Hydrophilic because it interacts with the interior of the membrane, whereas region 2 is hydrophobic because it interacts with an aqueous environment and hydrophilic because it interacts with an aqueous environment, whereas is hydrophobic because it interacts with the interior of the membrane.
Hydrophobic because it interacts with the interior of the membrane, whereas hydrophilic because it interacts with an aqueous environment and hydrophobic because it interacts with an aqueous environment, whereas hydrophilic because it interacts with the interior of the membrane.
Therefore, The best description of relationship between regions 1 and 2 of the protein is region 1 is hydrophilic because it interacts with an aqueous environment, whereas region 2 is hydrophobic because it interacts with the interior of the membrane. Thus, option B is correct.
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What are seven easily observable characteristics of all living things
Answer:
Explanation:
-Responsiveness to the environment - The organisms can respond to objects in its environment
-Growth and change - The organism can develop, grow, change
-Ability to reproduce - The organism can reproduce on its own or with others from their species
-Have a metabolism and breathe
-Maintain homeostasis
-Being made of cells
-Passing traits onto offspring
Explain the origin and importance of the buildup of free oxygen in the atmosphere for the evolution of animal life.
Answer:
Prior to the buildup of oxygen, organisms were mainly anaerobic and used mechanisms where no oxygen was present or needed. Once the buildup of oxygen starting occurring, organisms were forced to either evolve to survive or they would die off due to the presence of oxygen. The organisms needed to evolve so that they could use and benefit from the abundance of oxygen. The presence of oxygen is a huge evolutionary milestone that kick started the evolution of many new species. Organisms began to metabolize and perform all of its functions with oxygen present.
Explanation:
The origin and importance of the buildup of free oxygen in the atmosphere for the evolution of animal life as the Prior to the buildup of oxygen, organisms were mainly anaerobic and used mechanisms where no oxygen was present or needed.
What is the importance of oxygen?The importance of oxygen as once the buildup of oxygen starting occurring, organisms were forced to either evolve to survive or they would die off due to the presence of oxygen. The organisms needed to evolve so that they could use and benefit from the abundance of oxygen. The presence of oxygen is a huge evolutionary milestone that kick started the evolution of many new species. Organisms began to metabolize and perform all of its functions with oxygen present.
The origin and importance of the buildup of free oxygen in the atmosphere for the evolution of animal life as the Prior to the buildup of oxygen, he organisms needed to evolve so that they could use and benefit from the abundance of oxygen. The presence of oxygen is a huge evolutionary milestone that kick started the evolution of many new species.
Therefore, The origin and importance of the buildup of free oxygen in the atmosphere for the evolution of animal life as the Prior to the buildup of oxygen, organisms were mainly anaerobic and used mechanisms where no oxygen was present or needed.
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How many centiliters in 46.03 kiloliters?
Help me please
Answer:
4603000 cL
Explanation:
because i used a converter and please give me brainliest :D?
Mitochondria replicate themselves and even contain a small amount of
Answer:
I think it's a small amount of ATP
Quicklyyyyyyy neeeeeed help
All of the following are arguments used by global warming skeptics except
A. climate models for global warming have continually been wrong.
B. the dire consequences of global warming have not come to pass.
C. Earth has natural temperature cycles it goes through
D. an increase in temperature would actually be good for the climate
Answer:
D
Explanation:
Answer:
D
Explanation:
everything has is a reasonable answer and proof can be found to back it up except for D
Will award 80 points
Gametes contain ______ copy/copies of each gene.
Two
Four
One
Thee
Answer:
one
There may be many possible alleles for any gene, but a diploid cell or animal contains only two alleles of each gene or two copies of a single allele; a haploid gamete contains one copy of each gene, so only one allele.
1. which of the following is a function of the nucleus?
stores DNA
stores sugars
builds proteins
packages proteins
2. which of the following statements about the nucleus is not true?
the nucleus stores the coded instructions for making the cell's proteins.
the nucleus usually contains a nucleolus region which where ribosome assembly begins.
the nucleus is the site of protein assembly.
the nucleus is surrounded by a nuclear envelope that lets materials in and out.
3. which organelle breaks down organelles that are no longer useful?
Golgi apparatus
lysosome
endoplasmic reticulum
mitochondrion
4. which of the following is a function of the cytoskeleton?
helps a cell keep its shape
contains DNA
surrounds the cell
helps make proteins
5. which of the following is a function of vacuoles in an animal cell?
convert energy
make proteins
store materials
break down molecules
pls help me! <3 :)
Answer:
1. Stores DNA
2. The nucleus is NOT the site of protein Assembly
3. Lysosome
4. Helps a cell keep its shape
5. Lysosomes store materials
Explanation:
The farther a planet is located from the sun, the longer its day and year. How accurate is this statement?
Answer:
Very Accurate cause if a planet is farther from the Sun the slower and longer it takes to make a rotation around the Sun
Explanation:
Un niño que ha enfermado de paperas o varicela, no desarrollará estas
enfermedades en una segunda oportunidad, porque:
I. la piel, mucosas y lágrimas impiden el ingreso de los microbios.
II. en el primer contacto adquirió anticuerpos.
III. interviene la inmunidad Adaptativa, la cual presenta "memoria".
IV. su sistema defensivo está preparado frente a una segunda exposición
a. I y II son correctas
b. III y IV son correctas
c. II, III y IV son correctas
d. I, II y III son correctas.
Respuesta:
La respuesta correcta es la C, ya que II, III y IV son correctas.
Explicación:
Nuestro sistema inmunológico nos defiende de agentes patógenos que pueden enfermarnos, y está compuesto por dos tipos distintos de inmunidades: la inmunidad innata y la inmunidad adaptativa.
La inmunidad innata es aquella que reacciona primero cuando se presenta una amenaza, atacando a los patógenos de manera inespecífica gracias a mecanismos que ya existían antes de que se desarrolle la infección. Cuando se trata de inmunidad innata, nuestras principales barreras de defensa son la piel y las mucosas, y las células de la respuesta inmune de mayor relevancia son los neutrófilos, entre otras.
Por el contrario, la inmunidad adaptativa, es de respuesta tardía y puede actuar de maneras diferentes dependiendo de cuál sea el patógeno invasor. Hay dos tipos de inmunidad adaptativa, la humoral y la celular. De la inmunidad humoral participan principalmente los linfocitos B, que fabrican anticuerpos específicos; mientras que la inmunidad celular es llevada a cabo por linfocitos T. La ventaja que tiene la inmunidad adaptativa en comparación con la innata es que es específica, diversa, más eficaz, y POSEE MEMORIA.
Las células de la inmunidad adaptativa presentan la capacidad de "recordar" cómo el cuerpo actuó ante una amenaza en el pasado para poder llevar a cabo un plan mucho más eficaz. Esta es la razón por la que las vacunas funcionan: porque se le inyecta a los individuos una versión débil del patógeno (por ejemplo, del virus que causa la varicela) para que el cuerpo "aprenda" a vencerlo para cuando se encuentre con ese microorganismo en un futuro.
are there more tissues or more organs in your body? explain your reasoning.
Answer:
More tissues.
Explanation:
Each organ is made up of several different types of tissue. Therefore, for every organ in the body, there are many more tissues.
Use the paragraph to answer the question. A team of biologists has been investigating fireflies to determine the cause of their declining population. Habitat loss is the most likely factor in the decline of the bioluminescent bug. Light pollution also plays a role. Excessive light disrupts the insect’s mating ritual. Write one to two sentences giving an example of technical language in this paragraph and explaining how it affects the overall meaning of the paragraph. (2 points)
Explanation:
Biologists have discovered that the reason behind the decline of fireflies is habitat loss, light pollution and excessive light; excessive light can disrupt the insects mating ritual.
What was found in a French cave in 2013?
answer is Montignac........
Two differences between hormones and the nervous system
Answer:
Hormones can be proteins, lipids or cholesterol-based molecules. Neurotransmitters are protein. The main difference between hormones and neurotransmitters is that Hormones are produced in the endocrine glands and released into the bloodstream where they find their movement targets at a distance from their origin. In contrast, Neurotransmitters are released into the synaptic space by a terminal of an excited presynaptic nerve cell and transmit a nerve signal to the neighboring postsynaptic nerve cell.
Explanation:
Answer:
the nervous system and endocrine system (hormones) is that the nervous system uses electrical impulses to send messages through neurons while endocrine glands use hormones to send messages to the target cells through the bloodstream.
What does the sodium-potassium pump keep at a high concentration outside of the cell?
A. potassium
B. sodium
Answer:
B. sodium
Explanation:
2 potassium ions are moved inside the cell and 3 sodium ions are moved out. So there is more sodium on the outside of the cell.
i'll give you brainliest if you put this in your own words
The pressure on the inner core makes the inner core into a solid state, the temperature is hotter that the outer core but it's not hot enough to melt a substance do to the pressure squeezing down from all the layers above!
Answer:
The pressure on the inner core puts the inner core into a solid state, therefore the temperature is hotter than the outer core, but not enough to melt a substance due to the pressure squeezing down from the other layers above.
Explanation:
3 examples of situations where a force is a nuisance
Answer:
getting shoved
getting hit
stubbing your toe
Explanation:
Which of the following is made of cells?
Which of the following is made of cells A:rock B:snowflake. C:rain drop. D:leaf
Describe what occurs as epidermal cells move away from the dermis.
Answer:
Your skin blisters, and a clear liquid fills the bubble
Explanation:
Living cells are classed as either prokaryotic or eukaryotic. Which of the following characteristic(s) identify eukaryotic cells? Select all that apply.
are produced by division of another cell
comprise most multi-celled organisms
contain DNA
have a nucleus
have membrane-bound organelles
mostly single-celled organisms
contain cytoplasm
are the smallest unit of living matter
Answer:
have nucleus have membrane bound organelles have cytoplasm contain DNA
Which tectonic plate boundary caused the structure that is circled in the image?
Answer:
I'm guesssing it's B? I did this a very long time ago( two weeks ago)
Explanation:
Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges. While the process of forming these mountain ranges is volcanic, volcanoes and earthquakes along oceanic spreading ridges are not as violent as they are at convergent plate boundaries.
Choose one of the animals listed on the page, and write a brief description of its characteristics. Be sure to discuss any ways
the animal has adapted to its environment. (Site 1)
Answer:
The Horned Viper has two little horns on its head thats why its called The Horned Viper. The Horned Viper is a snake that has venom in its bite that can kill humans. The snake can grow to about two feet long. The Horned Viper likes to blend in with the sand all around it. The snake burrows into the sand and waits for birds, lizards, and small mammals to eat.
Explanation:
i got 100% mark brainlyest plz
How many moons does Saturn have?
O A.
OB. 1
O c. 4
O D. More than 50
Answer:
D
Explanation:
Saturn has 82 moons.
Answer:
D
Explanation:
How many moons does Saturn have? A total of 82 confirmed moons, surpassing even Jupiter, which has 79. There could be even more hidden moons that orbit around Saturn, and as such, this gas giant will be from now on not only recognized for its prominent rings but also its numerous moons.
The specialized structures of different types of cells are related to the cell's
1. function
2. equilibrium
3. energy
4.homeostasis
Answer:
function I think
Explanation:
I am in 7 grade it has been a minute so i thnk this is right it the only one that sounds right
The specialized structures of different variety of cells are related to the cell's function. Thus, option 1 is correct.
What are different cell functions?Every one of the life forms are comprised of cells. They structure the underlying premise of the relative multitude of life forms. The cell wall and the cell film are the principal parts that capability to offer help and design to the life form. For eg., the skin is comprised of an enormous number of cells.
During the time spent mitosis, the parent cell separates into the girl cells. In this way, the cells duplicate and work with the development in a creature.
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Why are bananas curved?
Answer:
Bananas are curved since they grow towards the sun!
Answer:
Because thyy grow by the sun.. or something like that..
Explanation:
An experiment is conducted to determine the effects of energy drinks on an individual’s heart rate groups A and B have matched for all factors such as age and sex.Each person in group A is given two red bull energy drinks for breakfast and lunch and then the heart rate is measured.Each person in group B is given water to drink with breakfast and lunch and then their heart rate is measured.Both groups are Fed the same breakfast and lunch the results are recorded
Answer:
Explanation: this is complicated
