Answer:
The word 'Group' in science refers to a column in the periodic table of the chemical elements.
Explanation:
"In a group, the chemical elements have atoms with identical valence electron counts and identical valence vacancy counts." -high school textbook
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Which of the following is a strategy for controlling water pollution?
A: Using more salt on roads during snow and ice storms
B: Reducing natural wetlands by filling them in
C: Discharging hazardous chemicals directly into rivers
D: Identifying storm drains and placing signs on them to remind people not to dump chemicals in them
Answer:
D: Identifying storm drains and placing signs on them to remind people not to dump chemicals in them
Explanation:
Water pollution is the contamination of water either consciously or unconsciously.
From the options, the correct answer is Option D.
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Since, mainly water pollution is caused by the waste chemicals that come out from factory. So, we should discharge factories that they shouldn't directly pass the chemical into rivers.
[tex]\pink\star[/tex]C: Discharging hazardous chemicals directly into rivers. So option (C) is correct.
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How do the underlined words affect the meaning of the passage? A. They argue that children should not be allowed to play loudly on the beach. B. They encourage readers to learn more about dolphin lifecycles. C. They make the issues that marine creatures face more relatable to humans. D. They suggest that sound sanctuaries are not entirely necessary.
The underlined words affect the meaning of the passage by : ( B ) They encourage readers to learn more about dolphin life cycles
Why do we highlight ?The purpose of highlighting a word or a phrase in a block of sentence is to draw the attention of the reader to the word so that the key information which the reader seeks cannot be missed.
We can highlight by either bolding the words or underlining the words containing the key information.
Hence we can conclude that the underlined words, encourage readers to learn more about dolphin life cycles
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Attached below is the missing image
Answer:
Explanation:
C. They make the issues that marine creatures face more relatable to humans.
If an object leaves Earth's gravitational field and floats in space, which one of the following will change?
A. The object's mass.
B. The object's weight.
C. Neither the mass nor the weight of the object will change.
D. Both the object's mass and weight.
Answer: B. The object's weight
Explanation:
Weight depends on gravity and is a measure of how much force gravity exerts on an object. Mass is the measure of how much matter is in an object and doesn't depend on gravity. In space, mass doesn't change but weight does.
Soil texture is determined by the amount and distribution of mineral particles.
Please select the best answer from the choices provided
T
F
Answer:
The answer is trueeeeee
Explanation:
Answer:
t
Explanation:
In Meiosis, what phase does crossing over, independent assortment, and non disjunctions occur? What are the two types of gametes produced in meiosis? How is genetic variation created in meiosis? What are the possible conditions that could arise is as a result of nondisjunction? What are the phases of meiosis?
Electrons in an outer or
shell determine the chemical reactivity of atoms.
Answer:
The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms.
Explanation:
Electrons in an atom's outermost shell determine the chemical reactivity of atoms; this is true as the electrons in an atom's outermost shell, also known as its valence electrons, play a crucial role in determining the chemical reactivity of the atom.
What is an electron?The chemical reactivity of an atom depends on its ability to gain or lose electrons, which is determined by the number of valence electrons in its outermost shell. The valence electrons are the ones that are involved in chemical bonding, which is the process by which atoms combine to form molecules. Atoms with incomplete valence shells tend to be more reactive because they have a strong tendency to gain or lose electrons to achieve a stable configuration. A stable configuration is achieved when an atom's outermost shell is completely filled with electrons.
Hence, Electrons in an outer shell determine the chemical reactivity of atoms; this is true as the electrons in an atom's outermost shell, also known as its valence electrons,
learn more about the elecrtons here.
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12 12
Distinguish between the terms life expectancy
and life span. Explain why one of these has
changed significantly over the past century and
the other has not. Your initial post should be 3-4
paragraphs in length. Use at least three sources
to research your answers. Remember to cite
your sources within your posting and list the full
citations at the end. You will also need to
Answer:
life expectancy is the period one is expected to live and life span is the years one has lived
Part B What are two strengths and two weaknesses of your model?
Answer:
strength: it provides raw material for plants and major component of food.
weaknesses: it increases earth's temperature and change the habitat.
Explanation:
The diagram shows the carbon cycle which is important cycle present on the earth. This carbon is present in carbondioxide form which is used as a raw material by plants in order to make their own food. This carbon is also present in different organic compounds. When its concentration increases in the atmosphere, the temperature of the atmosphere increases and many areas are not suitable to live for many plants and animals.
What is the difference between the nutrition of birds and humans?
Answer:
birds have a digestive system that includes gizzards in which the food goes to get crushed to smaller peices as humans do not
Explanation:
Carbohydrates are found in
A. grains.
B. water.
C. vitamins.
Answer:
A- grains
Explanation:
Carbohydrates are starchy food
Answer:
A) grains
Explanation:
Carbohydrates are among the most abundant nutrin in grains fruits and vegetables. Types of carbon in these foods include sugar starches and fiber
can anybody help me
pic below
Answer:
Option D- A long, sticky tongue
Since the tounge is sticky all the ants stick to it and Anteater eats them.
Answer:
D
Explanation:
A long, sticky tongue helps the anteaters to stick its tongue long enough into mounds containing ants/termites which get stuck onto its tongue, thereby helping it get food.
Under capitalism, what is the determining factor in success? A. the individual B. the government C. the social order
A researcher is analyzing a sample of ocean water that is particularly rich in nutrients and colder than the other samples of water collected. Based on this information, from which area of the ocean was the water probably taken?
A.
the beginning of an estuary at the mouth of a strong river
B.
an area with high salinity, where very few organisms can survive
C.
near the bottom of the ocean, close to the sea floor
D.
near the ocean’s surface, where atmospheric carbon is absorbed
Answer:
the beginning of an estruary
A zygote is best described as _____.
A. a complete set of chromosomes
B. a sperm rejected by a hardened egg
C. the first diploid cell after fertilization
D. an egg just before fertilization
How deep is the root system of a giant sequoia?
4 meters (13 feet)
20 meters (60 feet)
40 meters (130 feet)
80 meters (260 feet)
The sequoias root system is wide spreading, but shallow. There is no taproot. A mature sequoia's roots can occupy over 1 acre of earth and contain over 90,000 cubic feet of soil.
Select the correct answer.
Tapeworms enter the human stomach through food. They feed on nutrients in the stomach and cause infections in the body. What does this association depict?
Answer:
Tapeworms are a parasite of humans
Explanation:
Tapeworm infection is caused by ingesting food or water contaminated with tapeworm eggs or larvae. If you ingest certain tapeworm eggs, they can migrate outside your intestines and form larval cysts in body tissues and organs (invasive infection).
What would the possible blood types of a child be if his parents were type AO and type BB? Please give detailed explanation
A person's blood type is determined by the combination of three alleles IA, IB, and i. The possible blood types of the child born from A0 and BB parents are AB and B.
What is the ABO group?
The I gene determines the blood type of a person. This is a triallelic gene that expresses complete dominance and codominance.
Alleles
IA allele is dominant over the i allele. The person presents A type of antigens.IB allele is dominant over i. The person presents B type of antigens.IA and IB alleles express codominance. In this case, the person presents both types of antigens, A and B.i is the recessive allele. The person does not present any antigen.Genotypes and Phenotypes
H0m0zyg0us dominant or heter0zyg0us Individuals IAIA or IAi will express the A blood type.H0m0zyg0us dominant or heter0zyg0us Individuals IBIB or IBi will express the B blood typeIndividuals with h0m0zyg0us recessive genotype ii will express the 0 blood type.Individuals carrying IA and IB alleles will express the AB blood type.Now, in the exposed example
Cross: A0 x BB
Parentals) IAi x IBIB
Gametes) IA i IB IB
Punnett square) IA i
IB IAIB IBi
IB IAIB IBi
F1) 1/2 = 50% of the progeny is expected to be IAIB and have AB blood type
1/2 = 50% of the progeny is expected to be IBi and have B blood type
The possible blood types are AB and B.
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What type of vibration is created by S waves?
A. Propagation
B. Tension
C. Compression
D. Shearing
Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada
Which two of the following organisms are secondary consumers in this food web?
parasitic jaeger
barren-ground caribou
bilberry
Arctic fox.
Answer:
2 and 4
Explanation:
Those eat things to become secondary
In which of the atmospheric layers is the ozone layer located?
A: Troposphere
B: Stratosphere
C: Mesosphere
D: Thermosphere
Trees maintain the balance between gases in the air, removing carbon dioxide from the air and releasing oxygen.
Please select the best answer from the choices provided
T
F
False, due to pollution and greenhouse gasses, although trees do absorb Co2, the air is still not ballenced. Trees help, but not enough.
Answer:
True statement
Explanation:
D
Question 1
What does an allele represent?
Each pair of alleles represents the genotype of a specific gene.
Alleles are defined as the pairs of genes, occupying a particular spot on a chromosome.
what type of muscle tissue is found only in the heart?
Answer:
The cardiac muscle is only found in the heart.
Respond to the posts indicating your agreement or disagreement with their position and why. Feel free to bring in additional references to these reply posts.
post only irrelevent questions~
Define Internal and external fertilisation
Answer:
see the file attached!!
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What is the role of tRNA during translation?
A. It translates from amino acids to nucleic acids.
B. It moves the codons into a chain.
C. It moves the amino acids into a fhain.
D. It provides the code for the protein.
Answer:
a
Explanation:
What two types of movements do all planets have? What natural phenomena do they cause?
PLS I NEED IT FOR NOW
Answer: Rotation and revolution. Natural phenomena is day/night, seasons changing, tides changing, wind direction, ocean currents, precipitation.
Explanation:
Rotation is when an object spins on its own access, Revolution is when an object orbits or travels in an elliptical around another object. Like the earth revolves around the sun once every 365 days. The earth also rotates once every 24 hours.
For the natural phenomena, when the earth is moving as it does, there is a constant change in everything on the earth. Because of rotation, day and night happens. Because of revolution, seasons change. All of this makes different currents and weather.
Answer:
First question: orbit and spin
Orbit is around the sun, which causes the years to form
Spin is the planet itself, which causes the days to form.
Explanation:
What are the three reasons why cells divide? What are the chromosome number in diploid and haploid cells? What are the phases of mitosis? What are the phases of the cell cycle?
Answer:
What Are the 3 Reasons Why Cells Divide?
•Repair of damaged tissue.•Growth of an organism.•Replace old and dying cells.What are the chromosome number in diploid and haploid cells?
•Humans have 46 chromosomes in each diploid cell. Among those, there are two séx-determining chromosomes, and 22 pairs of autosomal, or non-séx, chromosomes. The total number of chromosomes in diploid cells is described as 2n, which is twice the number of chromosomes in a haploid cell (n).What are the phases of mitosis?
•Mitosis is understood to involve five phases, based on the physical state of the chromosomes and spindle. These phases are prophase, prometaphase, metaphase, anaphase, and telophase.What are the phases of the cell cycle?
The cell cycle is composed of interphase (G₁, S, and G₂ phases), followed by the mitotic phase (mitosis and cytokinesis), and G₀ phase.Explanation:
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Question 2 of 10
How did oxygen first enter Earth's atmosphere?
Answer: It wouild be biological proceses
When are the evolutionary effects of genetic drift the greatest?
The population size is small
The population size is large
$exual selection occurs
Intraspecific competition is weak
Answer:
The population size is small
Explanation:
If population size is small, the genetic diversity is low. Thus, genetic drift overtime results in individuals with very similar genotype. This is bad news because if a particular disease affects suppose organism with AA genotype and due to genetic drift all members are AA, then all the organisms might be decimated and extinct.
Answer:
population size is small
Explanation: