Answer: C. weathering and erosion
Oxygen has 6 valence electrons. How many electrons does an atom of oxygen need to become stable?
two
four
six
eight
Answer:
2 electrons
Explanation:
According to the octet rule, atoms must bond to each other, sharing electrons among themselves in an attempt to complete their valence shell (last layer of the electrosphere). In other words, an atom becomes stable when it has 8 electrons in its valence shell.
Oxygen atoms have six electrons in their valence shell, so to achieve the stability suggested by the octet rule (eight electrons), these atoms share two electrons, forming one oxygen gas (O₂) molecule.
Answer:
A. two
Explanation:
i got it right
Can soil be transported?
Explanation:
Soils can be transported and deposited by the action of gravity. The movement, in this case, might be a very small distance.
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What energy source is used to make products, such as gasoline, plastics, and Vasoline?
A
Solar
B.
Coal
С
Hydroelectric
D
Petroleum
Answer:
hydroelectric I think
Today, prairie ranchers and farmers raise:
sheep, cattle, and pigs
COWS, deer, and bison
O horses, cows, and bison
o hawks, owls, and snakes
Answer:
sheep, cattle, and pigs
Explanation:
From sheep, cattle, and pigs, the most raised animal on the farms today is beef cattle. The reason why cattle is the first choice is its profitability. The cattle are easy to maintain, they just need good pasture and freshwater, some supplemental food during the winter, and enough space.
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What will be the end result of the process shown in the model?
A. Two identical daughter cells will be produced.
B. Crossing over will result in new genetic material.
C. Chromatids will have just moved toward opposite poles.
D. One much larger cell will be produced through nuclear fusion.
Answer:
i think its b i could be wrong
Explanation:
The correct model shown is Crossing over will result in new genetic material.
What is crossing over?
When it comes to genetics and genomics, the term "crossing over" describes the DNA exchange that takes place between paired homologous chromosomes (one from each parent) during the development of egg and sperm cells.
This process leads to novel allele combinations in the gametes (egg or sperm) produced, ensuring genomic variety in any offspring born.
When chromosomes of the same type are paired together during meiosis, a biological event called crossing over takes place. Parts of the chromosome can be exchanged when two chromosomes, one from the mother and one from the father.
Therefore, The correct model shown is Crossing over will result in new genetic material.
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in order for an animal to gain mass what does it need?
Answer: Food
Explanation: Of course, animals need food in order to gain mass. The food is used to transfer into cells, forming tissues, skin, and muscle to the animal.
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9. Evolution is
a. a rare event.
b. currently occurring ONLY in scientific laboratories.
c. constantly occurring at the same rate in ALL organisms.
d. a process that occurs as a result of differences in reproductive fitness.
e. a process that occurred only in the past.
which ocean formed as a direct result of the breakup of Pangea.
O Arctic. O Mediterranean O Pacific. O Atlantic
Answer:
[tex]\boxed{Atlantic\:Ocean}[/tex]
Explanation:
The rifting that occurred between North America and Africa created multiple unsuccessful rifts. One rift resulted during a new ocean, the North Atlantic Ocean.
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What are 3 terms used to describe organisms such as cows
Answer:
animals
mammals
vertebrate
Explanation:
cows have a backbone so they are a vertebrate
cows have hair so they are mammals
and the are animals just like every other living thing
Three terms used to describe organisms such as cows are:
MammalsHerbivoresRuminantsWhat is an organism?An organism, especially a cow, is a living thing. An organism is a singular living being that exhibits characteristics of life, such as the ability to develop, reproduce, respond to stimuli, and preserve homeostasis. Mammalia, a class of multicellular organisms including cows, forms the animal kingdom. Cows are complex biological entities with specialized sensory and digestive systems that enable them to live and thrive in their environment.
The following three terms are used to describe cow-like creatures:
Cows are mammals, which are warm-blooded animals with hair or fur and the ability to feed their young with milk.
Herbivores: Cows are herbivores, which means they only eat plants and no animal products like meat or dairy.
Cows are included in the class of herbivorous mammals known as ruminants, which have a four-chambered stomach.
Therefore, three terms used to describe organisms such as cows are:
MammalsHerbivoresRuminantsLearn more about Organisms, here:
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Tanyia
If the sperm of a boa constrictor has 18 chromosomes, how many chromosomes will each skin cell of the snake have?
Answer:
18 chromosomes
Explanation:
If the sperm of a boa constrictor has 18 chromosomes, the number of chromosomes that each skin cell of the snake will have is 36 chromosomes.
What is meiosis?Meiosis is the process of gamete formation where each daughter cell or gamete contains half the number for f chromosomes as the parent cell.
According to this question, the sperm of a boa constrictor has 18 chromosomes. The sperm is a gamete formed as a result of meiosis.
Therefore, If the sperm of a boa constrictor has 18 chromosomes, the number of chromosomes that each skin cell of the snake will have is (18 × 2) = 36 chromosomes.
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Why are many farmers encouraged to plant different types of crops on the same land throughout the year?
A - It provides more food for other countries.
B - It allows for more genetic variation in plants.
C - It prevents insects from destroying crops.
D - It helps to preserve the quality of the soil.
Answer:
d
Explanation:
it helps to preserve the quality of the soil
Answer:
Polyculture/poly cropping helps to preserve the quality of the soil.
Explanation:
When a hawk eats a mouse and then uses the energy from the mouse to fly,
the hawk's body converts to what
Answer:
It would be Chemical to mechanical
Explanation:
Because food is a chemical source and the hawk flying is a mechanical source.
When a hawk eats a mouse and then uses the energy from the mouse to fly in this case chemical energy is converted to mechanical energy.
What is food chain?Food chain is the sequence of flow of energy in which all the levels get proper food supply and it is the food web which starts from producer and ending at top such as predator species, decomposer and detritivores.
In food chain plants play the role of producers as they are autotrophs and they prepare their own food in the presence of sunlight and all other organisms depend upon plant for food so they are known as producers in the food chain.
The main role of food chain is to understand the importance of each organisms and how they are depend on each other as well as to understand the role of food chain in maintaining ecological balance.
Therefore, When a hawk eats a mouse and then uses the energy from the mouse to fly in this case chemical energy is converted to mechanical energy.
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DNA contains four types of nitrogenous bases. One of these bases is
Answer:
Explanation:
adenine (A), thymine (T), cytosine (C), and guanine (G).
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 type of mutation results when bases are added to a gene
Answer:
"Frameshift" Mutations.
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5. What is the first cell of a new organism called?
A. Zygote
B. Fertilization
C. Diploid
D. Haploid
Answer: Zygote
Explanation:
Fertilization joins 2 haploid gametes into a diploid zygote, the first cell of a new organism. The Zygote enters G1 of the first cell cycle, and the organism begins to grow and develop through mitosis and cell division.
Explain why it makes sense to use the word translation to describe protein synthesis and why it would not make sense to use the word translation to describe mRNA synthesis?
Answer:
The application of the word translation makes sense at the time of describing the synthesis of protein as the language of nucleic acids is transformed into the language of polypeptides by the phenomenon of translation. On the other hand, it will not be suitable to describe the synthesis of mRNA using the word translation as the nature of the biomolecule stays similar because both the DNA and the product of DNA, that is, mRNA are nucleic acids.
a caldera forms when ____________________
Answer:
A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the volcano is expelled, often forcefully.
Answer:
whn a volcano erupts
Explanation:
The 15 tectonic plates are rigid in the center and have geological activity at the boundaries (edges). This means that:
Monarch butterflies are toxic when eaten. Viceroy butterflies look like monarchs and, therefore, don’t get eaten. What defense is the Viceroy using?
A. Chemical defenses
B. Mechanical defenses
C. Mimicry
D. Camouflage
Answer:
Mimicry
Explanation:
"Vicerory butterflies look like monarchs". They are mimicking the appearance of the monarch to protect themselves because monarchs are toxic.
which is the starting point in modern systematics in the classification of living world
Answer:
Taxonomy
Explanation:
Taxonomy is a system of classification that helps scientists identify and name living and nonliving organisms.
Taxonomy in biology organizes the natural world into groups with shared traits.
Long strands of DNA are called _______.
chromatids
autosomes
chromosomes
genes
Answer:
The answer would be chromosomes
Car exhaust is an example of what type of pollution?
A. air
B. water
C. land
D. underground
Answer:
A.
Explanation:
It is a type of air pollution because it is emitted into the atmosphere.
Answer:
Air pollution
Explanation:
Car exhaust is a gas so I can infer that it would pollute the air.
In plants, what is the function of the xylem?
A. To move carbon dioxide through the stem
B. To absorb sunlight
C. To move water through the roots
D. To absorb oxygen
this is on 02.05 plant growth in agriscience foundations 1 flvs
Answer:
Xylem is one of the two types of transport tissue in vascular plants, phloem being the other. The basic function of xylem is to transport water from roots to stems and leaves, but it also transports nutrients.
Explanation:
Which sequence describes the formation of a gamete?
A.transcription → replication → translation
B.replication → cell division I → cell division II
C.mitosis → cell division I → translation
D.cell division I → cell division II → transcription
Answer:
part c
Explanation:
The sequence replication → cell division I → cell division II describes the formation of gametes.
Where does the formation of gametes occur?Meiosis (reduced division), in which a germ cell splits into two pieces and produces four gametes, is the process by which gametes are created.
Meiosis is a type of cell division that results in the production of four gamete cells and a 50% reduction in the number of chromosomes in the parent cell.
The gonads are where gametes (germ cells) are made. This process is known as spermatogenesis in males and oogenesis in females. The majority of novel mutations arise during gametogenesis, however males exhibit a higher mutation rate.
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How did Watson and Crick learn about Chargoff's rules?
Answer:
Chargaff explained his findings and research to Watson and Crick at Cambridge.
Explanation:
Watson and Crick met Erwin Chargaff at Cambridge in 1952, where he explained his research and findings to them. His rule of parity, or 1:1 rule, stemmed from his discovery of guanine's equal ratio in pairing with cytosine.
Watson and Crick went in to use Chargaff's findings and the work of the researcher Rosalind Franklin as a basis for their work on DNA's double-helical structure.
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Which of the following organelles would not be present in the nerve cell of the humpback whale?
A. Plasma membrane
B. Cell wall
C. Mitochondria
D. Lysosome
How many 02 molecules are required for two glucose molecules to undergo cellular respiration?
Why did polio vaccine make people paralysed?
Answer:
When it multiplies in the nervous system, the virus can destroy nerve cells (motor neurons) which activate skeletal muscles. These nerve cells cannot regenerate, and the affected muscles lose their function due to a lack of nervous enervation.
Explanation:
1. Enzymes are examples of
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic Acids
2. Which of the following is the correct role of nucleic acids in the body?
A. They provide quick-releasing energy to the body.
B. They contain genetic information that is passed to offspring
C. They catalyze chemical reactions in the cell.
D. They are the main structural components of cell membranes.
3. Which of the following is NOT an organic molecule?
A Cellulose (C6H1005)
B. Sucrose C12H22011
C. Water H2O
D. Testosterone C19H2O2
4. Which function of lipids is NOT.jmportant for a bear hibernating in the winter?
A Long term energy
B. Insulation from the cold
C. Structural support in the cell membrane
D. Prevents water loss
5. Meat, eggs, hair, and feathers all contain this monomer
A Monosaccharide
B. Amino acid
C Nucleotide
D. Triglyceride
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