Which early farming tool removed the stalk and the grain from a husk of wheat?
Answer:
thresher
Explanation:
Which of the following molecules supplies the main source of short term energy used in cellular respiration?
1
Gases and
Photosynthesis
0)
The diagram shows the gases that enter and leave a plant during photosynthesis. Which
gases do arrows 1 and 2 represent?
*
(Photosynthesis)
(1 Point)
Arrow 1 represents nitrogen and arrow 2 is oxygen
Arrow 1 represents oxygen and arrow 2 is nitrogen
Arrow 1 represents oxygen and arrow 2 is carbon dioxide
Arrow 1 represents carbon dioxide and arrow 2 is oxygen
Answer: Arrow 1 is carbon dioxide, and arrow 2 is oxygen
Explanation: I got it right in a test.
Photosynthesis is the process of preparing food in the presence of sunlight, water, and carbon dioxide. The process is carried out by the plants and certain bacteria and algae.
The correct answer is:
Option D. Arrow 1 represents carbon dioxide and arrow 2 is oxygen
The mechanism of photosynthesis can be explained as:
Photosynthesis is the process in which light energy is converted into chemical energy. The plants use up carbon dioxide and water in the presence of sunlight to yield products. During photosynthesis, the plants yield oxygen as a by-product and produce a sugar molecule to be used as energy.
Thus, the plants use carbon dioxide and give out oxygen during photosynthesis.
To know more about photosynthesis, refer to the following link:
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Which of the following is not an example of discontinuous variation?
attachment of ear lobes
height
blood type
biological sex
27. In 1986, a meltdown of a nuclear reactor in the city of Chernobyl, in Ukraine, released highly radioactive chemicals into the atmosphere. As a result, people suffered various forms of cancer because of exposure to these radioactive chemicals. Cancerous cells divide much more often than noncancerous cells and form tumors in the body.
(A) The radioactive chemicals burned people’s skin, which increased cell division rates in the people who developed cancer.
(B)The radioactive chemicals polluted people’s food, which changed some people’s ability to digest proteins and caused cancer.
(C) The radioactive chemicals caused structural changes in people’s genes, which changed how proteins functioned in cell division.
(D) The radioactive chemicals polluted people’s drinking water, which caused cells to divide more quickly in the people’s bodies and form tumors.
Answer:
I believe the answer could be B
PLZZZ HELP IMPORTANT
Match each type of mutation with the correct chemical sequence for A-C-G-T.
1. A-C-G-G-T
deletion
2. C-G-T
reordering
3. A-G-C-T
duplication
Answer: 1. A-C-G-G-T is Duplication.
2. C-G-T is Deletion.
3. A-G-C-T is Reordering.
i try
5. When a hawk eats a mouse and then uses the energy from the mouse to fly,
the hawk's body converts — *
A. mechanical energy to chemical energy
B. thermal energy to mechanical energy
C. chemical energy to mechanical energy
D. mechanical energy to thermal energy
Answer:
Chemical To Mechanical
Explanation:
The Chemical energy fueled the hawk and the hawk used that energy to fly, basically like a car needs gasoline to move
The hawk body should be converted to the chemical energy to mechanical energy.
Conversion of energy:Since the hawk ate the mouse and after this it used the energy from the mouse to fly. Since food should be treated as the chemical source while the hawk flying should be treated as the mechanical source. Also, the chemical energy should fuel the hawk and the hawk should used the energy to fly where the car required gasoline for movement.
Therefore, option c is correct.
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Mary's husband dies from war-related injuries. Which insurance plan probably covers Mary and her son?
Answer:
life insurance
Explanation:
he died, so the insurance pays for some of the funeral depending on what insurance company and money goes to the family
In a pedigree, a rare trait appears in both sexes with equal frequency, and each affected offspring has one affected parent. What is the most likely mode of inheritance?
Answer:
Autosomal dominant inheritance
Explanation:
The most likely mode of inheritance of the trait would be autosomal dominance.
In autosomal dominant inheritance, a dominant allele on a non-sex chromosome is responsible for its transmission across generations. Unlike autosomal recessive traits that require two recessive alleles for their transmission, only one dominant allele is required for autosomal dominant traits and the implication is that it appears in every generation and both males and females have an equal chance of inheriting such traits.
Hence, for a rare trait that appears in both sexes with the same frequency and each affected offspring has one affected parent, the most likely mode of inheritance would be autosomal dominance.
Iron-rich minerals in rock pointed in one direction and then switched to the exact opposite direction. This supports what idea?
A.The rocks were being turned around.
B. Earth's magnetic field stopped working entirely.
C. Earth's magnetic field goes through pole reversals.
D. Being underwater makes the rocks respond to magnetic fields.
Select the correct answer. A physician examines a patient who complains of breathing problems. She finds fluctuations in the patient's blood pressure and heart rate. The physician thinks it's because of a brain Injury. Which part of the brain is affected?
Answer:
Medulla oblongta
Explanation:
HELP!!
What can every Florida citizen do on a daily basis to help prevent further damage to the environment?
O join one of the many ecological organizations
O give money to the Sierra
Club or other NGOs
O make environmentally conscious choices
O lobby the government for more money
Answer:
The answer is "make environmentally conscious choices"
Explanation:
All the human are the reasons for global environmental change through a subset of proximate causes, which straightforwardly modify parts of the climate in manners that have worldwide impacts. We start this section by laying out and showing a way to deal with representing the major proximate reasons for worldwide change, and afterward continue to the more troublesome issue of clarifying them.
Different contextual analyses delineate the different ways human activities can add to global environmental change and give solid foundation to the more hypothetical conversation that follows. We have recognized explicit exploration needs all through that conversation.
Why is difficult to make a list of characteristics of life
Answer:
"Being alive" is the most important characteristic of life. According to science the answer is different. Biology is the branch of science deals with the study of life and living matter in all its forms and phenomena.
Explanation:
Its difficult because sometimes beings can easily be side tracked
Which family in the periodic table has metals that are usually harder than other metals?
Alkali metals
Alkaline earth metals
Lanthanide series
Transition metals
Answer:
Transition metals
Explanation:
The transition metals are usually harder than other metals such as the alkali metal, lanthanide series metals and the alkaline earthmetals.
The reason for this is because they have a stronger metallic bonding between their atom.
Hardness is a physical property which is attributed to intermolecular forces and the atomic arrangement
The transition metals are found in the d - block on the periodic table.
They have a d-orbirtal which confers extra electrons and higher degree of stability to the atom. The d-orbirtal provides more delocalized electrons for the metallic bonds formed.
Answer:
The answer is D), transition metals
Explanation:
I searched it up, and the only metal with hardness showing as a significant property was transition metals. I took the test, and transition metals is the answer. I also pulled this up on the internet:
Transition metals are hard which indicates the presence of covalent bonds. This happens because transition metals have unpaired d-electrons. The d-orbital which contains the unpaired electrons may overlap and form covalent bonds. Therefore, these transition metals are very hard.
More the 90% of the worlds ocean is
Answer:
Inhabited by life
Explanation:
The three-field system:_________
a. allowed animals to graze on two-thirds of the land.
b. was replaced with the two-field system.
c. allowed for increased production by reducing the amount of land that was left fallow.
d. made its biggest impact in southern Europe.
i think some of y'all know this so pls help me to answer this i don't have any stock knowledge
I took a photo 'cuz they said there's forbidden messesage
What is the second step in the classification of living things
Answer:
The classification of living things includes 7 levels: kingdom, phylum, classes, order, families, genus, and species
In the PBS video about the marathon, the speaker discusses several pieces of information about why humans are well equipped for running. The majority of his support for this position comes from which discipline?
You Answered
Well the PBS kid television is about to teach kids how to behave and be disciplined .
Explanation:
They also have them to learn.
I need help does anybody knows the answer
During the period of time labeled Z in the graph, there is a drastic change in biodiversity. Which of following best describes the ecosystem at the rnd of time period Z?
Answer:
D: The ecosystem has a low biodiversity, so there is less competition over available resources among the species
Explanation:
Which of these choices do both sustainable and organic agriculture avoid?
Answer:
You are saying which one but what is which one???
Explanation:
PLEASE HELP MARKING PEOPLE AS BRAINLIST ALL DAY
Nitrogen fixation is carried out primarily by ________ with legume plants in root nodules . who live in a symbiotic relationship
A:humans
B:plants
C:bacteria
D:consumer
Answer:
Letter c po sagot
Explanation:
you welcom
Answer:
C
Explanation:
Bacteria can live in a symbiotic relationship
please help me
thank
Answer:
You got the answer
Then okay
what is the importance of solution
Answer:
Solutions play a very important role in many biological, laboratory, and industrial applications of chemistry. Of particular importance are solutions involving substances dissolved in water, or aqueous solutions.
Explanation:
Identify which list of questions below would all be classified as Abiotic
Options:
Deer, fern, mushroom, soil
Weather, volcano, sunlight, river
Elephant, fish, weather, fern
Sunlight, river, deer, volcano
The list of options that would be classified as abiotic are sunlight, river, deer, volcano (option D).
What are abiotic factors?An ecosystem is the interconnectedness of organisms (plants, animals, microbes) with each other and their environment.
An ecosystem is composed of biotic and abiotic components. Biotic factors are those factors that have life while abiotic factors are those without life.
Biotic factors or components include the following:
Plants e.g. ferns, mushroomsAnimals Microbes e.g. bacteriaTherefore, the list of options that would be classified as abiotic are sunlight, river, deer, volcano.
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Why should there only be only one independent variable in an expirement
please answer this question and I will mark you as brainliest. for who get the correct answer.
Answer: Your answer is The Lac Repressor
Explanation: I've taken this test before, it is correct.
While standing near a river, a student noticed small rocks colliding with larger rocks, causing small pieces to break off and be carried
downstream. What processes is the student observing?
A. The small rocks are chemically weathering the larger rocks and erosion is moving the pieces downstream.
B. The small rocks are chemically weathering the larger rocks and deposition is moving the pieces downstream.
C The small rocks are mechanically weathering the larger rocks and erosion is moving the pieces downstream.
D. The small rocks are mechanically weathering the larger rocks and deposition is moving the pieces downstream.
Which image represents cytokinesis in a plant cell?
Answer:
D
Explanation:
gl (:
A crucial function of cytokinesis is to divide the cell in half and make sure that one nucleus is placed in each daughter cell. Thus, option D is correct.
What is the importance of cytokinesis in plant cells?The four steps of cytokinesis are membrane insertion, contraction, and completion. Animal and plant cells experience these stages in different ways.
The assembly and action of an actomyosin-based contractile ring during animal cytokinesis were characterized as occurring at the cell periphery.
In contrast, it was thought that plant cell cytokinesis involved the centrifugal formation of a new cell wall through the fusion of vesicles generated from the Golgi apparatus.
Therefore, The process of cytokinesis begins at the anaphase phase of nuclear division and lasts until telophase.
Learn more about cytokinesis here:
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