A barrier method of contraception is a method that prevents the contact of sperm and ovum with the help of barriers. Examples include spermicidal creams, cervical caps, and condoms.
What do you mean by Contraception?Contraception may be defined as the method of restricting the number of children parents have. It is also comprehended as birth control or fertility control. It works in such a way that it prevents the process of successful fertilization.
Hormonal method contraception may be defined as those methods that alter the normal function and effectiveness of hormones like estrogen and progesterone. Examples include intrauterine devices, pills, injections, etc.
Therefore, the difference between the barrier method of contraception and the hormonal method of contraception is described above.
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how does the structure of xylem relate to its function
Answer:
They lose their end walls so the xylem forms a continuous, hollow tube. They become strengthened by a substance called lignin . Lignin gives strength and support to the plant.
When a cancer cell divides, which of the
following types of cells does it produce?
A. cancer
B. mature
C. immature
Answer:
A. cancer disease
not sure
How is it possible for a female emoji to have red coloring? Explain your answer using evidence from the pedigree above to support your claim.
The diagram below best defends which one of the following claims?
A.Genetic variation among offspring may result from the exchange of genetic material between homologous chromosomes.
B.Genetic variation among offspring may result from the duplication of homologous chromosomes.
C. Genetic variation among offspring may result from the deletion of homologous chromosomes.
D.Genetic variation among offspring may result from the mutation of homologous chromosomes.
Answer:
The answer is A
Explanation:
there isn't much to explain
Integrating sensory information and neural functions is a function of the __________. a. forebrain b. cerebrum c. thalamus d. cerebellum please select the best answer from the choices provided a b c d
Integrating sensory information and neural functions is a function of the cerebrum (i.e., the brain).
What is the cerebrum?The cerebrum or brain is the most important organ associated with functions of the nervous system.
The cerebrum is an organ that coordinates complex functions such as speech, movements, etc.In conclusion, integrating sensory information and neural functions is a function of the cerebrum (i.e., the brain).
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Vector contact involves contact with __________. a. an infected surface b. contaminated water c. an infected organism d. a carrier organism please select the best answer from the choices provided. a b c d
Vector contact involves contact with an infected organism. Details about vectors can be found below.
What is a vector?A vector is a carrier of a disease-causing agent or pathogen.
This means that a vector must come in contact with an infected organism to carry the disease-causing organism.
An example is the case of mosquitoes, which carries plasmodium pathogen that causes malaria when it feeds on an infected organism.
Therefore, vector contact involves contact with an infected organism.
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The Northern and Southern Hemispheres of Earth experience four seasons during the
year. What is the main reason for the change in seasons?
the rotation of the Earth on its axis
Answer:
Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.
4. Why isn't all the energy transferred by sunlight available to plants?
0)“If Jupiter was not there, there could be more terrestrial planets”. Explain how
what would happen if there was no Jupiter?
There would be minor changes in the planets' orbits about the Sun, but very little else. However, Jupiter does a great job of shepherding and absorbing small objects in the Solar System. With Jupiter gone, the main effect on Earth would be an increase in the rate of impacts from asteroids and other space flotsam.
What are two global issues associated with using fossil fuels for energy?(1 point)
fossil fuels are nonrenewable, so humans will run out of them eventually. burning fossil fuels also only damages nearby ecosystems.
fossil fuels are nonrenewable, so humans will run out of them eventually. burning fossil fuels also contributes to global climate change by releasing carbon dioxide into the atmosphere.
fossil fuels are nonrenewable, so humans must use less to allow them to be replenished naturally. burning fossil fuels also contributes to global climate change by releasing carbon dioxide into the atmosphere.
fossil fuels are nonrenewable, so humans must use less to allow them to be replenished naturally. burning fossil fuels also only damages nearby ecosystems.
Answer: b. fossil fuels are nonrenewable, so humans will run out of them eventually. burning fossil fuels also contributes to global climate change by releasing carbon dioxide into the atmosphere.
Explanation:
Fossil fuels are limited and we will run out of them eventually. They cannot be replenished in a single human's lifespan. Fossil fuels contribute to the destruction of ecosystems, but not only that. They release carbon dioxide into the atmosphere that warms the Earth. Therefore, anything other than B. would be incorrect.
what is the medial indentation on the kidneys called
All of the traits below are characteristic of the class Mammalia except which?
A.Four-chambered heart
B. Milk production for young
C.Oviparous birth of young
D. Hair covering the body
All of the traits below are characteristic of the class Mammalia except C.Oviparous birth of young as they do not lay eggs.
What are the Oviparous ?Animals that reproduce via way of means of laying eggs are referred to as oviparous animals. In those animals, the manner of each fertilization and embryo improvement does now no longer arise within the mother. Birds and frogs are examples of oviparous animals.
Most mammals are viviparous, giving beginning to stay young. However, the 5 species of monotreme, the platypuses and the echidnas lay egg.
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Answer:
C. Oviparous birth of young
Explanation:
The vast majority of mammals are viviparous, and only a couple are oviparous.
Average soil contains about what
percentage of mineral deposits?
A. 5%
B. 45%
C. 90%
Answer: It would be B. 45%
6. (a) What two major changes have occurred in the North Fork Toutle River?
A massive landslide Mud flows in the Toutle river.
How changes have occurred in the North Fork Toutle River?There had been many earthquakes in the area prior to eruption but this happen to be a massive land slide because a moving magma have over steepened the mountain slopes.
This geologic process uses gravity to cause rock, soil, artificial fill or a combination of the three to move down a slope. Slow weathering of rocks as well as soil eruption and volcanic activity also causes landslides
Thus, massive landslide Mud flows in the Toutle river.
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a working theory becomes a paradigm when:
Answer:
When it stands the test of time and is supported by many experiments.
10. Organic compounds of what class contain only two elements?
if glucose levels get too high in our body, what diseases may occur because of it?
Answer:
Hyperglycemia or high blood glucose
Explanation:
Hyperglycemia or high blood glucose occurs when there is too much sugar in the blood. This happens when your body has too little insulin (the hormone that transports glucose into the blood), or if your body can't use insulin properly. The condition is most often connected with diabetes.
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A student is creating a T chart of prokaryotic vs eukaryotic cells
T chart of prokaryotic cell vs eukaryotic cell.
Prokaryotic cell size is generally small ( 0.5-10um ).Nuclear region is not surrounded by nuclear membrane. Membrane bound organelles such as mitochondria, Lysosomes, endoplasmic reticulum are absent nucleus is absent. cell division is by fission or budding ( but no mitosis ).they always have single chromosome. DNA is circular and lies free in the cytoplasm. DNA is nàked( not associated with proteins or RNA to form chromosome) eg - found in PPLO bacteria and blue green algae. Eukaryotic cell they are larget in size (1-100um)Nuclear region is surrounded by a nuclear membrane. all the membrane bound organelles are present. nucleus present. cell diviis mitotic or meiotic.they have more than one chromosome. DNA is linear and contained in a nucleus. DNA is associated with proteins and RNA to form chromosomes. e.g found in plants and animals other than PPLO and blue green algae.How does drilling for oil negatively impact the environment?
Answer:
Oil and gas drilling is a dirty business
Explanation:
Oil and gas drilling has a serious impact on our wildlands and communities. Drilling projects operate around the clock generating pollution, fueling climate change, disrupting wildlife and damaging public lands that were set aside to benefit all people
In the gene pool of a given population of rabbits, 80% of the gametes carry the dominant allele for gray coat. what percentage of the population is heterozygous gray
Answer:
prolly all but then again there is not enough information to actually answer this question
Explanation:
A_____ is a chemical substance that organisms require to live
Answer:
A NUTRIENT IS A CHEMICAL SUBSTANCE THAT ORGANISMS REQUIRE TO LIVE
which correctly lists three main causes of deforestation?
Which of the following describes an environmental consequence of population growth?
Increase in prevalence and spread of disease
Degradation of land, with decreased pollution
Loss of habitat and biodiversity and less extinctions
Climate change, increased drought, and less storms
What are the definitions of compression and tension
Answer:
Compression means a decrease in the volume of any object
Tension is the degree to which anything is stretched or strained
Explanation:
Hope this helps:).....if not then sorry for wasting your time and may God bless you:)
A body of fresh water is shown below.
B
Which point in this body of water is most likely to be in the photic zone?
A. Point D
B. Point B
C. Point A
D. Point C
Answer:
Point B
Explanation:
Point B is getting the most light and is closet to the surface
Point B is getting the most light and is closet to the surface.
What is Photic zone?The daily cycle of light and dark in the photic zone of the world's oceans is maybe the most potent environmental signal accessible. Russell's suggestion that zooplankton resided in depths with the best light intensity was one of the early reports to propose that light had a major role in vertical migration.
He went on to say that as animals strayed from this zone of ideal light intensity, physiological responses governed by photochemical systems prompted them to come back.
Subsequent reviewers came to the conclusion that there was a lot of (although speculative) evidence that light had a substantial role in controlling fish's vertical migration.
Therefore, Point B is getting the most light and is closet to the surface.
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One of the benefits of the degeneracy of the genetic code is that:.
Answer:
degeneracy allows multiple codon triplets to code for a single amino acid.
Explanation:
Not sure of the options, but degeneracy allows multiple codon triplets to code for a single amino acid. Like UAU and UAC both code for tyrosine.
Which observations describe both images? Select all the correct answers. The oil mixes with water. The oil floats on the surface of the water. The oil sinks to the bottom of the water. The oil spreads to cover the water. The oil stays in one spot.
The correct answers are, the oil floats on the surface of the water and it spreads to cover the water surface.
Properties of oil
Oil is a liquid substance that can be described with the following properties;
Oil is less dense than water, which means it will float in waterOil has high viscosity, and with the help of surface tension of water it will spread in water.Thus, the correct answers are, the oil floats on the surface of the water and it spreads to cover the water surface.
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The example of the Deepwater Horizon illustrates which of the following?
A. There is no regulation in the oil industry.
B. Once pollution occurs, recovery is impossible.
C. There is no longer a viable fishing industry in the Gulf Coast.
D. Accidents can have devastating consequences for the environment.
Answer:
he necessity for environmental regulations and improved clean-up plans is now being discussed and taken seriously.
Explanation:
I don't know the answer but you can get help from this
1.) You have to inform your community about the Aedes aegypti mosquito.
Describe how the mosquito transmits the dengue fever virus to human beings.
2.) Outline TWO activities which the community can carry out on the environment, to prevent the spread of mosquito-borne diseases, and explain how these activities will be effective in preventing the diseases.
3.) Suggest ONE activity, OTHER THAN the two in (b) (ii), which you can carry out in the home to prevent the spread of dengue fever.
Hello, please answer those questions, please.
Proper environmental sanitation and the use of insecticides will prevent the spread of dengue fever virus.
What is a disease vector?A disease vector is an organism which transmits pathogens to other organism.
Aedes aegypti mosquito is the vector for dengue fever. It transmits mosquito through its bite, thus introducing the virus into the blood.
The use of insecticides and the proper sanitation will help prevent the transmission of diseases.
At home, use of insecticide-treated nets will help prevent the spread of dengue fever.
Therefore, proper environmental sanitation and the use of insecticides will prevent the spread of dengue fever virus.
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A population of plants growing in a field is examined over a period of years. The plants have either white or yellow flowers.
What best explains the observations?
A. White flowers increase the plant's fitness, so the population is under directional selection.
B.Yellow flowers increase the plant's fitness, so the population is under directional selection.
C.Yellow flowers increase the plant's fitness, so the population is under disruptive selection.
D.White flowers increase the plant's fitness, so the population is under disruptive selection.
Thebest explanation for the observation is that white flowers increase the plant's fitness, so the population is under directional selection.
What is genetic variation?Genetic variation refers to the differences that exists in the genes of organisms of the same species or different species.
The gene for flower color in the plants has two alleles for yellow and white flower color.
Over time, the proportion plants with white-colored flower increased while that of yellow decreased.
Therefore, the best explanation for the observation is that white flowers increase the plant's fitness, so the population is under directional selection.
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