when did the human population begin to grow at a faster rate than at any other time in history
During the industrial revolution, the population of the Western world started to increase quickly. Since the 1950s, the population of the world has increased significantly.
Which period saw the fastest growth in the human population?The world population doubled at the quickest rate between 1950 and 1987, growing from 2.5 to 5 billion people in just 37 years. This represents a population increase of around one generation. During this time, population growth peaked in 1962 at 2.1%.
When did the exponential growth of the human population begin?The population doubled in the 19th century, tripled in the 20th century, and reached 6 billion in the year 2000. This exponential increase was caused by breakthroughs in medicine, science, and the economy.
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Final answer:
The human population began growing at an unprecedented rate during the Industrial Revolution in the late 18th century, accelerating during the 20th century, primarily due to technological, agricultural, and medical advancements that improved living conditions and life expectancy.
Explanation:
The human population began to grow at a faster rate than at any other time in history around the start of the Industrial Revolution in the late 18th century. This marked the beginning of what is often called the population explosion. Advancements in technology, agriculture, and medicine have all contributed to exponential growth. The global population growth rate accelerated further during the 20th century and continues to grow in the 21st century. The shift from very slow growth to rapid increase can be visualized by the shape of a J-curve in population graphs.
For example, it took millennia for the human population to reach 1 billion around 1800 CE, and only a little over a century later, the population reached 2 billion. Within less than another century, an additional 5 billion were added, showcasing the exponential nature of recent population growth. Scientific advancements and industrialization played significant roles in creating conditions for the population to grow at previously unseen rates, which includes improved health care, increased food production, and better sanitation.
When compared to the leg muscles of an olympic sprinter, the muscles of an olympic marathoner would likely show a greater proportion of oxidative slow-twitch fibers?
when grass is cut with a lawn mower, it gives off a distinct aroma. why does newly-mowed grass smell a little bit sweet?
Answer:
When the grass leaves are cut, a small amount of sugar is produced at the site of injury to plug the phloem.
Explanation:
I took the test and it's the correct answer hope it helps!
A particular cell has half as much dna as some of the other cells in a mitotically active tissue. the cell in question is most likely in?
What happens if the human egg is not fertilized? see section 42.2 (page 797) . view available hint(s) what happens if the human egg is not fertilized? see section 42.2 (page 797) . the egg is retained within the ovary. the corpus luteum degenerates. another egg will be ovulated immediately. chorionic gonadotropin levels increase?
A pregnant woman who is a vegan needs to take ______ nutrient supplements.
Which disease is characterized by porous bones? osteomalacia rickets osteosarcoma osteoporosis?
Which feature is characteristic of estuaries
Estuaries are unique environments where fresh and salt water meet, creating a diluted saltwater habitat. They provide protected areas for the breeding and development of various marine species. The organisms found in estuaries have developed adaptations to cope with the varying salinity conditions.
Explanation:The main characteristic of estuaries is that they are biomes where a source of fresh water, such as a river, meets the ocean. As a result, both fresh water and salt water are found in the same vicinity, and their mixing creates a diluted (brackish) saltwater. This makes estuaries unique and complex environments that host a variety of marine and terrestrial organisms.
Another specific feature of estuaries is that they act as breeding grounds and nurseries for various marine species such as crustaceans, mollusks, and fishes. These species have developed behavioral and physiological adaptations to cope with the rapidly changing salinity conditions that occur in estuaries. For example, many estuarine plant species are halophytes, meaning they can tolerate salty conditions. Furthermore, some mollusks and clams in this biome have adaptations that allow them to switch between aerobic and anaerobic respiration depending on the salinity and oxygen content of the water.
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Estuaries are unique brackish biomes where freshwater and saltwater interact. They house and support various species, which have evolved specific adaptations to handle changing salinity levels. Key factors affecting estuaries' ecological dynamics include tidal shifts and flow rate of freshwater sources.
Explanation:Estuaries are characterized by the unique intermingling of freshwater and saltwater, creating a brackish water biome where rivers meet the ocean. This environment serves as a protected area and breeding ground for various organisms, including the young offsprings of crustaceans, mollusks, and fish. The salinity in estuaries, which is influenced by the flow rate of freshwater sources and the daily tidal shifts, is a major factor affecting the types of organisms found here and their adaptations to survive.
Both plant and animal species in estuaries have developed various adaptations to deal with the changing salinity. Many estuarine plants are halophytes, which can tolerate salty conditions by filtering out salt from the water they absorb. Mussels and clams, for example, switch from aerobic to anaerobic respiration when exposed to low salinity and revert when high tide returns, increasing the salinity and oxygen content of the water.
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Large blood vessels that carry blood away from the heart to body tissues are called
Plant hormones can have different effects at different concentrations. this explains how ________.
Concentration produce different effects on plant hormones which explains why auxin at low concentration induce growth in apical meristems but at higher concentrations inhibit growth of axillary buds.
What are plant hormones?Plant hormones are chemical substances produced by plants which modify and regulate the growth and development of plants.
Plants hormones include the following:
auxin abscissic acid ethylenePlant hormones can have different effects at different concentrations. At higher concentrations they may have inhibitory effects while at low concentrations, they may have stimulatory effects.
For example auxin at low concentration induce growth in apical meristems while at higher concentrations, they inhibit growth of axillary buds.
Therefore, concentration produce different effects on plant hormones.
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The pancreas belongs to what part of the digestive system (alimentary canal/accessory organ)
The pancreas belongs to the accessory organ part of the digestive system.
The digestive system is made up of the alimentary canal and the accessory organs of digestion which include the pancreas, gallbladder, liver, salivary glands and tongue. The pancreas is an endocrine organ that is located in the left upper region of the abdomen.
Heartburn results when the acidic contents of the stomach regurtitate into the esophagus
Which of the following personal health practices should a person follow to prevent obesity? A) Limit spending time outdoors in summers. B) Have a balanced diet and exercise regularly. C) Wash hands frequently to maintain proper hygiene. D) Get the DNA modified to replace the faulty gene.
Answer:
def B
Explanation:
The personal health practices that should a person follow to prevent obesity are having a balanced diet and exercising regularly. The correct option is B.
What is obesity?Obesity is a body condition in which the body becomes overweight because you eat more than your body's requirements. It is harmful to the health of the person because it generates many diseases.
Personal health practices are the practices that a person does for their good health of them. These practices include eating nutritious food and exercise which keep the body fit.
Eating a balanced diet means including all nutrients in it and doing regular exercise to maintain health and keep the body out of obesity.
Thus, the option is B. Have a balanced diet and exercise regularly.
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Water-soluble nutrients absorbed into the blood are routed directly from the small intestine through the portal vein to the __________ before any other organ.:
Final answer:
Water-soluble nutrients absorbed from the small intestine are sent directly to the liver via the portal vein for processing before reaching other parts of the body.
Explanation:
Water-soluble nutrients that are absorbed into the blood are sent directly from the small intestine through the portal vein to the liver before any other organ. The hepatic portal system is a critical component in the body's nutrient distribution system, where the liver acts as a processing plant. Nutrient-rich blood from the small intestine, where most absorption occurs, reaches the liver for detoxification, storage, or metabolic processing before being circulated to the heart and throughout the body.
In theory, a population grows most quickly at ____ % of the environment's carrying capacity
Where are new skin cells produce to replace old cells that have been shed?
The production of the new skin cells occurs at the basal layer of the epidermis.
The skin is composed of three layers:
1. The epidermis- The outermost layer of the skin. Waterproof with the protective role and which serves as a barrier to infection. It also has its own layers (from the top): stratum corneum, stratum lucidum (only on hands and bottoms of feet), stratum granulosum, stratum spinosum, stratum basale.
The cells of stratum basale are constantly going through mitosis to produce new cells (keratinocytes) and as new cells are formed, the existing cells are pushed superficially away from the stratum basale.
2. The dermis,
3. The hypodermis.
i can confirm this is the answer.
The production of the new skin cells occurs at the basal layer of the epidermis.The skin is composed of three layers:1. The epidermis- The outermost layer of the skin. Waterproof with the protective role and which serves as a barrier to infection. It also has its own layers (from the top): stratum corneum, stratum lucidum (only on hands and bottoms of feet), stratum granulosum, stratum spinosum, stratum basale.The cells of stratum basale are constantly going through mitosis to produce new cells (keratinocytes) and as new cells are formed, the existing cells are pushed superficially away from the stratum basale.2. The dermis,3. The hypodermis.
In ________ a single sperm cell from the man is injected using a microscopic needle, directly into each harvested egg from the woman. the resulting zygote is then transferred after a few days into the woman's uterus
What evidence would you need to show that genetic diversity is the result of reproductive character displacement?
The fluid in glomerular capsule is similar to plasma except that it does not contain a significant amount of ________.the glomerulus differs from other capillaries in the body in that it ________. the glomerulus differs from other capillaries in the body in that it ________. is drained by an efferent arteriole is impermeable to most substances has a basement membrane has a blood pressure much lower than other organ systems
The fluid in the glomerular capsule is like plasma but lacks significant protein. The glomerulus distinguishes itself from other body capillaries in that an efferent arteriole drains it and maintains a higher blood pressure, facilitating efficient blood filtration.
Explanation:The fluid in the glomerular capsule (also known as Bowman's capsule) is similar to plasma except that it does not contain a significant amount of proteins. This is because the filtration membrane separates the blood in the glomerular capillaries, and the capsular space allows small substances such as water, ions, and glucose to pass through but blocks larger ones like proteins and blood cells.
The glomerulus differs from other capillaries in the body in two main respects. Firstly, it is drained by an efferent arteriole, which is unique because, in general, capillaries merge into venules, not arterioles. Secondly, the glomerulus has a significantly higher blood pressure than other capillaries due to its position between two arterioles (afferent and efferent arterioles). This high pressure allows for the rapid and efficient filtration of blood.
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Cold sores are caused by the herpes simplex virus type 1. a company that wants to develop antiviral drugs would ask a research immunologist to study —
Answer:
the answer is A
Explanation:
What is an allele? a dna sequence different versions of a gene a hairstyle a physical trait?
The ________ is not adequate for searching through large arrays
algorithm
hope this helps (and that it is right)
Any chemical, physical, or biological changes in the environment that harms living organisms is called
Your roommate is 5' 1" and weighs 100 lbs what bmi category would she be in
What common bone structure is shared in the forelimbs of the lobe fin fish and amphibians?
Treatment aims to _____ a disease or reduce the severity of its signs and symptoms.
Answer:
The correct answer is - cure.
Explanation:
Treatment is medical care or practice to provide relief to the person that is ill or sick. It includes the administration of medicinal doses.
The aim of medical or clinical treatment is to cure the disease, illness or injury of the patient by medicine or medical care. Treatment for a concerned illness is to reduce the severity of it's a sign and symptoms.
Thus, the correct answer is - cure.
Heterozygous alleles are found on ________ chromosomes
Answer is Homologous.
A diploid individual having two different alleles for a specific trait is called heterozygous. An allele is the alternative form of the same gene. The cells in diploid organisms contain sets of homologous chromosomes, which are paired chromosomes. Each chromosome of a homologous pair has the same genes on the same positions. Although homologous chromosomes have the same genes, they may have different alleles for those genes.
Example: The gene for seed color trait in a pea plant exists in pair. One gene or allele for yellow seed (R) and the other for green seed color (r). A heterozygous plant would contain alleles for seed color (Rr). Gene R is present one chromosome and its allele (r) is present on the other chromosome of the homologous pair.
The sequencing of mitochondrial dna to trace changes in human ancestors over time involves which specialization of anthropology?
Respiratory organs have large surface areas. how is this an advantage to an animal?
A scientist finds the bones of a dinosaur. what could help the scientist determine the approximate age of the dinosaur bones
Answer:
Explanation:
the kinds of trees living in the area of the bones