Answers
Explanation:
(Ans - 4)
(a) 1000 kg/ m^3
(b)
1) sink
2) float
3) sink
4) just float
(c) New density = 2 g/cc since both mass and volume of rock are halved.
(d) Ice floats because water in solid state undergoes hydrogen bond formation, which reduces its density and it starts to float.
Related Questions
Select the correct answer from each drop-down menu.
During photosynthesis, plants absorb
____ (nitrogen, oxygen, carbon dioxide) and release ____(nitrogen, oxygen, carbon dioxide)
into the atmosphere.
Answers
Answer:
carbon dioxide then oxygen
Explanation:
What do hormones coordinate?
Brain body balance
Complex processes that often involve several organs.
Interactions between tissues
Answers
Answer:
Interaction between tissue
Explanation:
Hormones are chemical messengers that control and coordinate the functions of all tissues and organs. Each hormone is secreted from a particular gland and distributed throughout the body to act on tissues at different sites. A number of natural hormones regulate body functions, including growth and development, metabolism, and reproduction.
Why do higher trophic levels in most ecosystems contain fewer organisms than lower trophic levels?
Answers
Answer:
There is less energy in higher trophic levels.
Explanation:
With less energy at higher trophic levels, there are usually fewer organisms as well. Organisms tend to be larger in size at higher trophic levels!
The second rule of thermodynamics indicates that some energy is wasted as heat with each energy transfer or transformation, hence higher trophic levels in most ecosystems have fewer organisms than lower trophic levels.
How energy is transferred in the ecosystem?In an ecosystem, producers like plants use the sun's energy to build organic molecules through a process called photosynthesis. Primary consumers like herbivores then eat these organic compounds. Although the herbivores receive the energy from the organic molecules, some of it is wasted as heat during metabolism along with other biological processes.
The remaining energy is subsequently given to secondary consumers, such carnivores, with part of it once more being lost as heat. The same holds true for higher trophic levels. As we progress up the food chain, the amount of energy available at each trophic level declines, and fewer species can be supported at each higher level.
Therefore, the second rule of thermodynamics indicates that some energy is wasted as heat with each energy transfer or transformation, hence higher trophic levels in most ecosystems have fewer organisms than lower trophic levels.
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how many birds have been tested positive for west nile virus in California
Answers
Answer:
13
Explanation:
There were 13 new WNV positive dead birds reported in California last week from the following counties: Contra Costa (2), Los Angeles (1), Orange (2), Sacramento (2), San Joaquin (2), and Yolo (4). 261 dead birds from 18 counties have tested positive for WNV in 2020.
3. Prokaryotic cells have membrane enclosed cell structures.
O
True
O
False
Answers
Answer:
False
Explanation:
Prokaryotic cells lack a membrane enclosed nucleus and organelles.
Prokaryotic cells lack membrane enclosed cell structures.
What are the characteristics of prokaryotic cells?Prokaryotes are single-celled organisms belonging to the domains Bacteria and Archaea. Prokaryotic cells are much smaller than eukaryotic cells, have no nucleus, and lack organelles.
Examples of prokaryotes are blue-green algae, bacteria and mycoplasma. Among prokaryotes, bacteria are the most common and multiply very fast.
They lack a nuclear membrane. Mitochondria, Golgi bodies, chloroplast, and lysosomes are absent. The genetic material is present on a single chromosome. The histone proteins, the important constituents of eukaryotic chromosomes, are lacking in them.
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Enzymes can . . . (check all that apply)
Add molecules
build molecules
rearrange molecules
Break molecules
Stabilize a reaction
Answers
Answer:
need a answer nowwwwwwwwwwwwww
Explanation:
Answer:
All of the above
Explanation:
Edpuzzle and I got it right
explain how euglenas structure maximises the amount of photosynthesis it can carry out
Answers
How did Sonu parents earn their living ?
Answers
Answer:
My dear
you should tell about the book the so that anyone can tell you the answer
can someone help pleaseeee
Answers
Answer:
b
Explanation:
it’s b
What are the possible phenotypes of the offspring?
Answers
Answer:
Eye color, hair color, pod shape, and flower position are all examples of phenotypes.
Explanation:
what is 1000 into brackets 0.0128/200
Answers
Answer:
0.064
Explanation:
Put in order by amount of energy in each state. (Lowest to Highest)
Plasma, Solid, Gas, and Liquid
Answers
Answer:
Solid, liquid,gas, plasma
Explanation:
Do you want me to give you an explanation? I will if you want.Just comment
How should you communicate with children?
Answers
Answer:
School Age Kids = 6-Puberty
More cognitively advanced and Want explanations and reasons why, but no verification beyond that.
Concerned about body integrity, reassurance needed
Nursing Techniques: Use diagrams, illustrations, books, and videos. Allow honest expression of feeling, use third party stories, allow adequate time and encourage questions
Pre-Schooler (Age 3-6)
Egocentrism, more advanced levels of language development
Animism-human characteristics to inanimate objects
magical thinking-If i think it, it can happen
Nursing Techniques: Use play, puppets, storytelling
Transitional objects, speak honestly, allow choices, use simple terms
Toddler = Age 1-3
Egocentrism=all about me, don't understand things from others point of view
Nursing techniques: Find out the child's terms and use them. Be consistent with non verbals and action (happy face when painful things), focus on child, enjoy stories, dolls, and books
Infants= birth-1 year
Primarily non-verbals, no sudden movements, soft voices, smiling faces.
Around 6 months = stranger anxiety
Explanation:
lemme know if im correct brainliest please
What surrounds all cells?
Answers
Answer:
All cells are surrounded by a cell membrane. The cell membrane is semipermeable, allowing some substances to pass into the cell and blocking others.
Explanation:
In a soil food web is Bacteria and Fungi, dead and decaying organic matter and plants the producers???
Answers
Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers.
Explanation:
In peas, yellow pea pods (Y) are dominant to green pea (y) pods. If a heterozygous
dominant male is crossed with a heterozygous dominant female, what is the probability
that the offspring will be green?
Answers
Answer:
In crossing heterozygous pea plants for the color of the pea pods trait, the probability of a offspring with the green pea pod is 25%.
Explanation:
Taking into account that the dominant trait is the yellow pea pod, and that both members of the parental generation are heterozygous (Yy):
Parental generation:
♂ Yy
♀ Yy
Making a Punnet's Square for this crossing:
Yy x Yy
Alleles Y y
Y YY Yy
y Yy yy
In the offspring, the phenotypic probabilities are :
Plants with yellow pea pods (Yy) 50%. Plants with the yellow pea pod (YY) 25% .Plants with green pea pods (yy) 25%.The Yy:YY:yy ratio is 2:1:1
6. True or False) All researchers agree on the definition of a species
Answers
how do scientists indetify a virus
Answers
The chemical components inside the virus
Which molecule changes as a result of a genetic engineering procedure?
A.) Amino Acid
B.) Carbohydrate
C.) Lipid
D.) Nucleic Acid
Answers
How is tooth length influenced by natural selection
Claim—
Evidence—
Reasoning—
Answers
Answer:
Tooth length is influenced by natural selection when you have healthy teeth If you lose one tooth chances are your other tooth will be crooked until that tooth grows back in, Your teeth all help each other keep each other strait. But if you are not taking care of your teeth than your teeth will not be strong enough to grow longer or any bigger.
Hope this helps,
Nathan is observing an ant using a digital microscope. The length of the image is 22mm. The ant's actual length is 2mm. Calculate the magnification of the image.
Answers
The magnification of the image is × 11
From the formula,
Image size = Actual size × Magnification
Then,
[tex]Magnification = \frac{Image \ size}{Actual \ size}[/tex]
From the question,
The length of the image = 22mm; and
The ant's actual length = 2mm
From
[tex]Magnification = \frac{Image \ length}{Actual \ length}[/tex]
Then,
[tex]Magnification = \frac{22 \ mm}{2 \ mm}[/tex]
Magnification = 11
Hence, the magnification of the image is × 11
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Liam and Melinda have completed one trial testing the freezing point of several solutions, but they cannot agree on what to do next in their experiment.
Answers
Answer: repetition, completing more trials for each solution
Explanation:
Fiona wanted to determined sugar water afected the growth rate of bean plant seeds. She buried a total of 12 bean plant seeds, each in its own pot with identical soil and placed the pots in a sunny place. She watered each group of plants with 200
mis (L) of water med with a specific amount of sugar. The table below shows the final height in centimeters (om) at the plants atter the experiment was completed
EFFECT OF SUGAR WATER ON THE GROWTH OF BEAN PLANTS
G1
Group 2
Group
18
2
1
.
3
19
10
0
Did the experiment correctly use the scientific method for experimentation?
No, because the amount of sugar was not high enough to make a difference in the growth
No, because there was no control setup in the experimento a comparison cannot be made
Yes, because there were multiple trials and several test variables (independent variables) that were tested
here were multiple trials and all the plants had some sort of growth so all requirements were met
Answers
Answer:
B
Explanation:
There is no control variable to prove if adding sugar helps or hurts the plants growth
This structure connects and allows communication between the left and right hemispheres
Answers
Answer:
Corpus callosum allows the left and the right hemisphere to communicate
Help please I don’t understand what it’s saying one lol
Answers
Answer:
it's c
Explanation:
the rest aren't completely true or will help them survive.
moths have dark dots that look like eyes to scare PREDATORS which will kill them so they can SURVIVE
Answer:
The answer is D
Explanation:
Because A, B, and C are traits and not behavior related, they are not the answer. A mother bear deciding to stay with its cubs are behavioral. Therefore, the answer is D.
What biological macromolecule is made up of monomers like the one shown below?
Fat
Carbohydrate
Protein
Nucleic acid
Answers
Which of these best describes the role of helicase and DNA polymerase in DNA replication? *
A. DNA polymerase "unzips" the DNA strand, while helicase brings in new strands of DNA to match the old strands
B. Helicase attaches new nitrogen bases to the ends of old DNA strands, while DNA polymerase breaks down unused DNA strands
C . DNA polymerase breaks down the old strand of DNA after a new one has been replicated, while helicase connects the two DNA strands together
D. Helicase "unzips" the DNA strand, while DNA polymerase brings in new strands of DNA to match the old strands
Answers
A chart showing the amount of rain each month in a region is an example of a scientist's
a. variables
b. data
c. conclusions
d. inferences
Answers
A chart showing the amount of rain each month in a region is an example of a scientist's data. Thus, the correct option is B.
What is Scientific data?Scientific data may be defined as the source of information that is significantly based on research completed by scientists and which has been published in a peer-reviewed journal. This source of data also assists future research based on a specific topic.
Inferences may be defined as the sort of predictions that are usually made before the actual performance of any research. A Conclusion may be defined as the outcome of any research that satisfactorily delivers the evidence to prove the hypothesis.
Variables are those that involve complete methodology on the factors which have to be estimated during an experiment or research.
Therefore, a chart showing the amount of rain each month in a region is an example of a scientist's data. Thus, the correct option is B.
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3) During the summers, Jayden’s mom bought 5 kg raw mangoes. She wants to use them for a year. a. Suggest any two ways that she can use to store them for at least two years. b. What is the synonym for storing food for a long period of time. c. Arun’s tomato plant started setting fruits. He saw small green fruits. On ripening, they turned red. Analyse what could have caused the change in the color of the fruits.
Answers
Answer:
A. Freeze them or put them in a jar/can
B. Nonperishable
C. Pigments for photosynthesis
Explanation:
A light microscope magnifies at a greater power than an
electron microscope,
True
Palse
Answers
Answer:
False
Explanation:
Answer: False
Explanation: A light microscope can only obtain a magnification of 1500x while an electron microscope can get a magnification of up to 25000x
