What are the most harmful plants found in earth​

Answers

Answer 1
Water Hemlock (Cicuta maculata) ...
Deadly Nightshade (Atropa belladonna) ...
White Snakeroot (Ageratina altissima) ...
Castor Bean (Ricinus communis) ...
Rosary Pea (Abrus precatorius) ...
Oleander (Nerium oleander) ...
Tobacco (Nicotiana tabacum)
Answer 2

Explanation:

...... Water Hemlock .......


Related Questions

opinion about dispersal and adaptation allow species to persist in changing environment!

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Answer:

   

Explanation:

5) During which part of the water cycle is energy absorbed by water?

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Answer:

hope this helps you!!!!!

Which of the following describes the ways organisms are interconnected through there feeding patterns?

A. Food chain

B. Tropic level

C. Food web

D. Consumer chart

PLEASE HELP

Answers

A food web describes the ways that’s organisms are interconnected through their feeding patterns.
I’m 99.9% sure it’s Food web!

What are two ways that different species can divide up resources?

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Answer:The competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche (competing for identical resources). Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.

Explanation:hope this helps happy hallowen

If I were measuring the pH at varying distances along a stream to test the impact on pH of the factory upstream. I would choose to measure the water above the factory which would represent which part of an experiment (control, independent, or dependent) Circle one.

Answers

Answer:

Dependent variable

Explanation:

The dependent variable in an experiment is the variable that the experimenter measures in an experiment. The dependent variable responds to changes made to the independent variable.

In this case, the pH of a stream is being measured at varying distances. If one is to measure the pH of the part of water above the factory, the pH being measured represents the DEPENDENT VARIABLE in the experiment.

You notice that some of your plants are growing at different heights. You want to know if the amount of water affects the growth of the plants and decide to construct an experiment. Your hypothesis states, "If a plant gets more water, then the taller it will grow". Identify the INDEPENDENT VARIABLE A) Amount of water the plants are given B) Plant height (growth) C) Amount of sunlight OD) Type of soil​

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Answer:

A is the correct answer

Answer:

A

Explanation:

hope this helps. .................

The idea that each living species has descended with changes from other species over time is called.

Answers

Answer:

Theory of Natural Selection

A mutation occurs during protein synthesis. How will the protein produced be affected? A. Since the mutation causes a new code for a better amino acid, the protein will still function normally. B. Since the mutation causes a new code for the same amino acid, the protein will still function normally. C. Since the mutation causes a new code for a better amino acid, the protein will be more powerful while performing its function. D. Since the mutation causes a new code for the same amino acid, the protein will be more powerful while performing its function.

Answers

Answer:

A mutation during protein synthesis may not affect the protein since the mutation causes a new code for the same amino acid, the protein will still function normally.

Explanation:

Protein synthesis depends on the transcription of DNA to RNA, and on the sequence of nucleotides in the chain, determining the triplets or codons that encode a specific amino acid.

In protein synthesis, when a mutation alters the codon, changing one nucleotide for another, it is possible that the mutation does not alter the amino acid and the protein functions correctly. This is because an amino acid can be encoded by several codons, as occurs with leucine, which is encoded by CUU, CUC, CUA and CUG.

    The other options are not correct because one mutation does not give better amino acids or more powerful proteins.

A group of scientists determines that a mitochondrial DNA sequence shared by two species has a constant mutation rate. The sequences of mitochondrial DNA for the two species are shown below. Species A: GACTGGGCATTA Species B: GACCGGACATTA Based on this information, which of the following best explains the difference in the DNA sequence between the two species? Species A and B probably share the most recent ancestor because they only differ by three mutations. Species A and B have fewer differences between DNA sequences means that fewer mutations occurred. Species A and B probably have distinct ancestors because they have many differences in mutations. Species A and B are closely related because they differ by five mutations in their DNA sequence.

Answers

Species A and B have fewer differences between DNA sequences means that fewer mutations occurred. It is likely due to sequence homo-logy.

Whta are mutations?

A mutation is any alteration in the nucleotide (DNA) sequence of the genome of a particular organism.

The linear order of nucleotides and their differences (mutations) can be used to infer homo-logy between two species.

In this case, there are only two different nucleotides in these sequences, thereby sequence homo-logy indicates a likely common origin.

Learn more about sequence hom-ology here:

https://brainly.com/question/9640986

Answer: Species A and B have fewer differences between DNA sequences means that fewer mutations occurred.

Explanation:

Took the test and got it right

compounds that contain both carbon and hydrogen atoms

Answers

Answer:

CH4

Explanation:

Combining hydrogen and carbon produces a group of organic compounds called hydrocarbons. Depending on the specific molecular formula, there can be many different types of hydrocarbons, such as the fuels propane and octane. The simplest hydrocarbon is methane, which has the chemical formula CH4.

Ch4 contains both carbon and hydrogen atoms they are known as hydrocarbons

How does a hot day affect enzyme activity during photosynthesis?

Answers

Answer:

At higher temperatures, more collisions occur so the rate of reaction increases. However, extremely high temperatures disrupt the shape of the active site, which will reduce itsactivity, or prevent it from working. Theenzyme is now denatured . Enzymestherefore work best at their optimum temperature.

Please tell me what the correct answer is

Answers

I would guess b because it complete dissolved with an acid

The half-life of uranium-328 is about 4.5 billion years. After four half-lives have passed, what fraction of the original sample will be left?

Answers

Uranium-238 decays very slowly with a half life of 4.5 billion years. what percentage of a sample of uranium-238 would remain after 13.5 billion years?

The mass of Uranium halves every 4.5 billion years, so 13.5 billion years= 3 half-lives.

[tex]M=M_{0}[/tex] × [tex](\frac{1}{2} )^n[/tex]

Is the equation that describes the decay, where [tex]M^0[/tex] is the initial mass and [tex]n[/tex]   is the number of half-lives passed.

So if 3 half-lives have passed:

[tex]M=M_{0}[/tex] × [tex](\frac{1}{2} )^3[/tex]

[tex]M=M_{0}[/tex] × [tex](\frac{1}{8} )[/tex]

[tex]M= \frac{1}{8} M_{0}[/tex]

So there will be 1/8 of the original mass left after 13.5 billion years, or 12.5% of the mass left.

How does levels of organization relate to a video about helping peoples brains?

Answers

Answer:

Organs and Organ Systems. After tissues, organs are the next level of organization of the human body. An organ is a structure that consists of two or more types of tissues that work together to do the same job. Examples of human organs include the brain, heart, lungs, skin, and kidneys.

Explanation:

Levels of organization helps us (people) to classify the different types of interactions that occur in the environment

DNA is directly inherited from an organism's parents, via their gametes, which are produced by the process of ____________________. Thus, if a person has phenylketonuria, they have inherited genetic information that has lead to the production of a dysfunctional protein, specifically a(n) _________________ that normally breaks down phenylalanine.

Answers

DNA is directly inherited from an organism's parents, via their gametes, which are produced by the process of Gametogenesis. Thus, if a person has phenylketonuria, they have inherited genetic information that has lead to the production of a dysfunctional protein, specifically a(n) enzyme that normally breaks down phenylalanine.

What is phenylketonuria?

Phenylketonuria is a rare genetic disease characterized by the presence of a mutation responsible for altering the function of an enzyme in the body responsible for converting the amino acid phenylalanine into tyrosine, which leads to the accumulation of phenylalanine in the blood, which in large concentrations is toxic to the human body.

With this information, we can conclude that DNA is inherited directly from the parents of an organism, through its gametes, which are produced by the process of Gametogenesis. So, if a person has phenylketonuria, they have inherited genetic information that led to the production of a dysfunctional protein, specifically an enzyme (n) that normally breaks down phenylalanine.

Learn more about DNA in brainly.com/question/264225

Number of chromosomes in daughter cells in mitosis.

Answers

Answer:

46 chromosomes.

Explanation:

In mitosis, two daughter cells separate from the parent cell, which has 46 chromosomes. In the prophase, the parent cell duplicates its own chromosomes to create two identical cells.

Each daughter cell should have the same number of chromosomes as the parent.

Answer:

The cell will possess an identical and full set of 46 chromosomes, or 23 pairs of homologous chromosomes.

write about life span in details​

Answers

Answer:

Life Span;The the period between birth and natural death of an organism is called life span.Life span varies from less than one day to more than 4000 years. Life span are not related to size or complexity of the organisms.Crows and parrots are of equal size. Crow has a life span of only 15 years while parrot lives for about 140 years.Similarly, Mango tree lives for about 200 years while Peeepal (Ficus religiosa) has a life span of about 2500 years.Banyan tree (Ficus bengalensis) spreads over a very large area but does not live beyond 500 years.

-TheUnknownScientist 72

A cell that uses an organic carbon source and obtains energy from light would be called a:.

Answers

Answer:

Photoheterotroph

En una situación experimental, tras permanecer en ayunas, tres personas ingieren: la primera (A) una ración de celulosa, la segunda (B) una ración de glucosa y la tercera (C) una ración de almidón. Compare la rapidez con la que suba la glucemia (nivel de glucosa en sangre) de las tres personas. Razone la respuesta.

Answers

Answer:

La respuesta correcta es: "El orden de rapidez en el sube la glucemia es el siguiente: (B) una ración de glucosa, (C) una ración de almidón y (A) una ración de celulosa".

Explanation:

La rapidez a la que sube el nivel de glucosa en la sangre depende del alimento que estemos ingiriendo. En este caso, el ingerir una ración de glucosa será lo que aumente el nivel de glucemia más rápidamente dado que no requiere ningún procesamiento digestivo. En segundo lugar será el almidón, el cuál debe ser degradado por la enzima amilasa para tener acceso a la glucosa. En último lugar será la celulosa, dado que no tenemos las enzimas necesarias para digerirla y se requiere la ayuda de microorganismos para hacerlo.

HELP PLEASE!!!!!!!!!!

Answers

Answer:

130 s or 2 min and 10 sec

Explanation:

[tex]x \: = vt[/tex]

260 = 2t

t = 130 sec

Answer:

2 min 10 s

Explanation:

Simply use unitary method.

Spiderman flies 2km in 1s.

For 1km, its 1/2 s.

For 260 km, it takes 1/2 *260 s

=130 s

Specialized structures found in the cytoplasm of the cell are called:.

Answers

Answer:

Cytoplasm is composed of specialized structures called cytoplasmic organelles. Cytosol is the liquid matrix of the cytoplasm. The organelle is suspended within this liquid.

Starch is too large to cross the selectively permeable membrane and must be broken down into simpler molecules
before it is transported to other cells. To do this, starch-digesting enzymes called amylases are formed in the
endoplasmic reticulum (ER) and are transported from cell to cell.
Which of the following best describes the mechanisms by which these enzymes would be transported from the cell
and into a new cell?
O A vesicle from the ER will pass through the plasma membrane via exocytosis, and will then be transported to a
new cell via phagocytosis.
O The enzymes will diffuse across the plasma membrane, and then form a vesicle in the extracellular matrix that will
be engulfed by the new cell via pinocytosis.
O The enzymes will pass through a channel protein to leave the cell, and then form a vesicle in the extracellular
matrix that will be engulfed into the cell via receptor-mediated endocytosis.
A vesicle from the ER will fuse with the cell membrane and release the contents into the extracellular matrix via
exocytosis, and then the plasma membrane will engulf the enzymes via receptor-mediated endocytosis.

Answers

Answer:

here

Explanatio

Answer:

D. A vesicle from the ER will fuse with the cell membrane and release the content in to the extracellular matrix via exocytosis an dthen the plasma membrane will engulf the enzyme via receptoe mediated endocytosis.

Explanation:

EDGE 2020 AP BIO

The distinct characteristics of different cell types in a multicellular organism are produced mainly by the differential regulation of the

Answers

The distinct characteristics of different cell types in a multicellular organism are produced mainly by the differential regulation of the genes.

What is gene regulation?

Genes are responsible for the synthesis of protein molecules in the cell.

All the cells of a living organisms contain the same sequence of genes, however, they differ in the way they are expressed.

This makes cells exhibit different characteristics in the same living organism.

Therefore, the distinct characteristics of different cell types in a multicellular organism are produced mainly by the differential regulation of the genes.

Learn more about gene expression at: https://brainly.com/question/3533860

Help me please!!! Can somebody help me

Answers

C, the third option

the other two don't make sense at all and C is correct

Thomas was interested in how the disruption of rock layers can be used to find a rock’s age. Which of the following are examples of how rock layers may be disturbed or changed? Choose the three that apply.

Answers

Answer:

igneous intrusion, extrusion, faults

Explanation:

Folding, tilting, faults, igneous intrusion, extrusion, and unconformities all disturb rock layers

britannica quiziz

what is the model below DNA or RNA.
How do you know?

Answers

Answer: DNA has a double helix while RNA shouldnt

The rabbit population in an ecosystem has grown past it's carrying capacity. What are two things that may happen naturally to bring the rabbit population back under control and how would these things control the population? (Must be at least 2 COMPLETE sentences

Answers

Answer:

One of the two things that could bring its population back down is lack of food, This is because due too the boom of the rabbit population their food sources will be eaten at a much faster rate until it overtime runs out. Another one is more predators, because of more rabbits more predators will be drawn too the area and help with population control by eating/killing them.

Explanation:

what role do trees play in the forest

Answers

Answer:

Trees play the part of taking in the carbon dioxide that we breathe out and changing it into oxygen so we can breathe it, they alos provide homes for different types of animals.

Hope this helps!


What makes a water molecule polar? *
it has partial charges
Ο Ο
O it has more electrons than protons
O it has more protons than electrons
O it is neutral

Answers

Answer:

it has partial charges

The hydrogen gives a positive partial charge

The oxygen gives a negative partial charge

Oxygen is way more electronegative than hydrogen therefore the molecule will be polar.

What energy storing molecule(s) are produced by the Krebs Cycle that go to the Electron Transport Chain?
A) ATP
B) ATP and NADH
C) FADH2 and ATP
D) NADH and FADH2

Answers

Answer: B

Explanation:

This breaks down the pyruvic acid to carbon dioxide.

This produces 2 ATP and 6 NADH, for every glucose molecule entering glycolysis. The Krebs cycle takes place inside the mitochondria. The Krebs cycle produces the CO2 that you breathe out.

Answer : B

Explanation:
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