Answer:
An organism change itself in response to the surrounding environmental condition.
Explanation:
Since striped fishes are able to save themselves from the predators due to their natural ability , the solid fishes would be an easy prey to the predators. This would lead to reduction in the number of solid fishes. Also the sea weed started dying because of environmental change. Thus, predators would shift their feeding pattern from sea weed to easily identifiable fish that is the solid fish and hence the solid fish may deplete rapidly.
Also the striped fishes in later stages may undergo natural selection to prevent themselves from the predators.
1
Write an expression that is equivalent to
a - 4.
NI
a-
4=
2
a-
?
2
24
Answer:243
Explanation: multiply all of them then add and it will be 243
The expression that is equivalent to a - 4 is: (a - 2) - 2 or (a - 6) + 2 or (a - 4) + 0 or (a - 8) + 4.
What is an expression?An expression in mathematics is a set of variables, constants, and operators that can be evaluated to produce a value.
For example, the expression "2x + 3" contains the variable x, the constants 2 and 3, and the operators + and *.
When we substitute a value for x, such as x = 4, we can evaluate the expression to get a value, in this case 11.
The expression that is basically equivalent to a - 4 is:
(a - 2) - 2 or (a - 6) + 2 or (a - 4) + 0 or (a - 8) + 4.
For example,
If a = 6, then a - 4 = 6 - 4 = 2, and we can also write it as (6 - 2) - 2 or (6 - 6) + 2 or (6 - 4) + 0 or (6 - 8) + 4. All of these expressions simplify to 2.
Thus, this can be the expression asked.
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At the end of mitosis two identical cells are produced.
true
false
Answer:
True
Explanation:
At the end of mitosis, one cell produces two genetically identical daughter cells.
Answer True or False.
1. Most plants have three main parts. true
2. A plant's leaves carry water to the roots.
3. Chlorophyll helps plants make food true
4. Roots hold plants in the soil.
5. Stems give off carbon dioxide into the air.
6. Some plants have roots that are branched
7
Root hairs take in oxygen from the air.
If an organism has 48 as its diploid number, how many chromosomes will each cell have at the end
of meiosis I?
O 24
O 12
0 48
O 96
Answer: The answer is 96
Explanation:
Pick any 2 organ systems in the human body and explain how they work together
in order to keep the body in homeostasis. Make sure to name both systems,
explain each system's main functions, and describe how they work together to
keep an important part of the body in balance.
Answer:If you were a single-celled organism and you lived in a nutrient-rich place, staying alive would be pretty straightforward. For instance, if you were an amoeba living in a pond, you could absorb nutrients straight from your environment. The oxygen you would need for metabolism could diffuse in across your cell membrane, and carbon dioxide and other wastes could diffuse out. When the time came to reproduce, you could just divide yourself in two!
However, odds are you are not an amoeba—given that you're using Khan Academy right now—and things aren’t quite so simple for big, many-celled organisms like human beings. Your complex body has over 30 trillion cells, and most of those cells aren’t in direct contact with the external environment.^1
1
start superscript, 1, end superscript A cell deep inside your body—in one of your bones, say, or in your liver—can’t get the nutrients or oxygen it needs directly from the environment.
How, then, does the body nourish its cells and keep itself running? Let's take a closer look at how the organization of your amazing body makes this possible.
Explanation:
How are young plants are supported
Answer:
You are a wh0re
Explanation:
state 2 preventive actions a person could take to reduce the chance of a heart attack
Answer:
Regular Exercise and a Healthy Diet
All 12 body systems interact to maintain ________________.
Answer:
homeostasis!
Explanation:
Answer:
The body systems constantly interact with each other to maintain homeostasis.
what do a grasshopper, a carrot, and a chicken have on common
Answer:
The food chain/food web
Explanation:
How would our world be different if humans did not discover how to use yeast thousands of years ago?
Answer:
what is yeast? a microscopic fungus consisting of single oval cells that reproduce by budding, and are capable of converting sugar into alcohol and carbon dioxide.
Explanation:
ok so it would be different because we wouldnt have alchool and carbon dioxide and sugar would be useless
Answer:
Once upon a time there were no farms. People ate fruit off the vine and killed animals as they ran. They roasted things when it suited them but just as often ate them raw. The world was like this for thousands of years, a place of arrows and nuts where everything that was necessary could be found. One might imagine many reasons for giving up on those old, superficially idyllic, ways. Perhaps it was hunger, that ultimate mother of invention, or maybe it was just invention itself, unmotivated by need.
A. anaphase
B. Metaphase
C. Telophase
D. Prophase
A student is examining the liquid mercury inside a thermometer. If the liquid is composed of only mercury atoms, what can the student conclude?
A :the liquid is an impure substance because it is in a liquid state.
The liquid is a pure substance because it is made up of elements
The liquid is an impure substance because it is inside a thermometer.
The liquid is a pure substance because it is made up of mixtures.
Answer:
b
Explanation:
DID IT
Mercury is used in thermometers to estimate temperatures. Liquid mercury composed of Hg atoms is a pure substance that consists of single elements. Thus, option B is correct.
What are pure substances?Pure substances are chemicals that are matter and have been known to have distinct chemical properties because of their constant and definite composition. The physical methods of separation can not be used to separate the pure substances.
The liquid mercury is a pure substance as it has been composed of only one type of elemental atom Hg. All of its composition has been carrying the Hg atoms uniformly that possess and exhibit the same chemical and physical characteristics.
Therefore, option B. the liquid mercury is a pure substance as it is made of the same type of element.
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Which cell structures are seen in prokaryotic and eukaryotic cells?
nucleus
cell membrane
mitochondria
DNA
ribosomes
cytoplasm
DONE
classify the following materials as rock or mineral
Answer:
You did not provide us with the materials you need to be classified, but I hope this helps:
A mineral is a solid formation that occurs naturally in the earth while a rock is a solid combination of more than one mineral formations which is also occurring naturally. A mineral has a unique chemical composition and is necessarily defined by its crystalline structure and shape.
Examples of rocks include: sandstone, basalt, limestone, and slate
Examples of minerals include: cobalt, zinc, lithium, and gold
In 1898 Friedrich Loeffler and Paul Frosch found evidence that the cause of the highly contagious hoof-and-mouth disease in livestock was a microscopic infectious particle. It was discovered that this particle cannot reproduce on its own. Which of these is most likely responsible for causing hoof-and-mouth disease in livestock?
Answer:
a virus, because it requires a host cell to reproduce
Explanation:
a bacterium, because it is contagious a fungus, because it infects livestock a protist, because it is microscopic a virus, because it requires a host cell to reproduceThe correct answer would be a virus because a virus is the only microbe that cannot reproduce on its own without a host. A virus utilizes the genetic mechanism of its host to reproduce either lytically or lysogenically.
In lytic cycle, the virus utilizes the genome system of the host to produce more viruses that eventually leave or lyses the host to become independent viral particles, killing the host in the process.
In lysogenic cycle, the virus inserts its genome into that of the host and uses the host's replication machinery to replicate its genome. The virus then waits for the defense mechanism of the host to become weakened before multiplying and lysing the host.
Water is able to dissolve more substances than any other liquid. This is an example of which property?
O Density
O Adhesion/Cohesion
O Universal Solvent
Answer:
Universal Solvent
Explanation:
Water is known as a universal solvent as it is capable to dissolve more substances than any other liquid.
This is how molecules of water are attracted to other types of molecules.
A true universal solvent doesn't exist but water is the closest to it, as its polar property allows water to dissolve substances.
a deer eats a leaf from a tree and gets energy from sugar molecules in the leaf. which two organelles are required to make this process possible
Answer:
Not 100% if this will help or if this is what you are looking for but...
When an animal eats the plant, the animal can use the plant's sugars as energy. This is how all animals get their energy from plants. Photosynthesis happens in organelles called chloroplasts.
Explanation:
Hope this helps a little.
Human impact on our ecology review
Answer:
Humans have impacted nature in a lot of ways. I also think that society has shifted humanity away from what matters most in life, we've changed as a species and I want to keep it as real as possible. but uh... what was your question?
Explanation:
May I have brainliest please? :)
Answer:
Impacts from human activity on land and in the water can influence ecosystems profoundly. Climate change, ocean acidification, permafrost melting, habitat loss, eutrophication, stormwater runoff, air pollution, contaminants, and invasive species are among many problems facing ecosystems.
Explanation:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
one different between prokaryotes, and eukaryotes is that prokaryotes do not have.
A: a nucleus,
B: cytoplasm
C: a cell membrane
D: DNA
Answer:
A a nucleus
Explanation:
since prokaryotes have their DNA in the cytoplasm they do not have a nucleus
Describe the movement of the water molecules at hot temperatures.
Answer:
Temperature causes water molecules to move more quickly, because each individual molecule has more energy as it gets hotter (according to Kinetic molecular theory). If you get water hot enough, the molecules move so much that the hydrogen bonds that hold them together start to break and the water becomes a gas
Explanation:
What is the best explanation for the faster times of the group fed a pre-race meal of bread with bananas and honey
Answer:
Bread, bananas and honey have carbohydrates.
Explanation:
The group fed a pre-race meal of bread with bananas and honey because bread, bananas and honey have high amount of carbohydrates which give quick energy to the athlete. This carbohydrate is a macromolecule which is quickly converted into micromolecule i. e. glucose that is absorbed by the cell and the mitochondria of the cell produces energy in the form of ATP that is used by the athlete in running.
Which of the following molecules can be identifield as carbohydrate select all that apply
Answer: it would beidk
Explanation: idklol.
Plz help me with this.
Answer: evaporation i believe
So, if this is one strand of DNA, what will the other strand look like?
A T G C C G A T A
Answer:
T A C G G C T A T
Explanation:
In deoxyribonucleic acid (DNA) there are 4 nitrogen bases that pair like:
• Adenine (A) with Thymine (T)
• Cytosine (C) with Guanine (G)
We are given the strand:
A T G C C G A T A
For each A, write a T. For a T, write an A.
For every C, write a G. For a C, write a G.
The corresponding strand is:
T A C G G C T A T
The alantic ocean grows in size due to a
It has grown in size due to global warming
Please help me with this. Will Mark Brainliest
Which of these belongs to a trophic level with the most energy?
Berries
Grasshopper
Mice
Owl
Answer:
berries
Explanation:
yw
Answer:
a berries
Explanation:
brainliest
When a red flowered pea plant was crossed with a white flowered pea plant, it was found that all plants in the F1generation carried only red flowers. If these plants are self crossed, i) Find the genotypic ratio that we can expect in F2 generation ii) What is the phenotype and genotype of F1 generation. Draw Punnett square for F2
Answer:
The correct answer is -
i) genotype of F2 - 1:2:1 = dominant:heterozygous:recessive
ii) genotype of F1 - all heterozygous dominant
phenotype - all red
Explanation:
In the cross of red- flowered plant and white flowered plant the offspring produces red flowers that s only possible if the parent red flower plant has both alleles in dominant condition.
For the F1 the gametes will be R, R and r, r
from the Punnett square, we can see all the offspring are heterozygous (Rr) in genotype and red in phenotype
For F2 the gametes will be - R, r, and R, r
From the punnet square, the genotype we get is 1:2:1 = dominant:heterozygous:recessive
Which set of events occurs in the S phase?
a. cell growth and DNA replication
b. cell growth and mitosis
c. mitosis and cytokinesis
d. DNA replication only
Answer:
D
Explanation:
DNA replication occurs during this S (synthesis) phase.
Which two atoms form a covalent bond?
Answer:
In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.
Explanation:
What type of macromolecule is starch?
Answer:polysaccharide
Explanation:
A starch macromolecule is a polysaccharide composed of thousands of glucose units. glucose molecules can be added to starch by a condensation reaction.