Species diversity is determined by species richness and species evenness, which are both impacted by competition among species within a community. Intense competition can decrease species diversity by reducing both the number and the relative abundance of species in an area.
Species diversity is affected by competition, a process where species interact and compete for the same resources within a community. When competition occurs, it can lead to a decrease in species diversity because some species will outcompete others, leading to reduced abundance or even the possible local extinction of the less competitive species. This interaction affects both the species richness, which is the total number of different species, and species evenness, which is the relative abundance of the different species in the community.
For instance, if we consider two communities with the same species richness (both having five different species), but in Community A one species, such as cheatgrass (Bromus tectorum), is far more abundant than the others, it results in low species evenness and thus a lower overall species diversity. In contrast, Community B, with a more balanced distribution of species, would exhibit greater species evenness and therefore higher species diversity.
Scientists study these community-level ecological interactions to understand the dynamics of species populations and the health of ecosystems. They note that biodiversity can vary greatly from one location to another, such as between the low-diversity glaciers of Antarctica and the high-diversity tropical rainforests.
1) The ocean absorbs more carbon dioxide from the atmosphere than the land.
True
False
When you hit your elbow and say that you hit your "funny bone," you have actually hit a nerve that runs across the bone surface. over which bone can this nerve be found?
Which types of vaccines described on the website are examples of live vaccines? explain your reasoning?
Which molecules do mammals use to store extra glucose in their muscles?
A.Starch
B.Glycogen
C.Baleen
D.Myosin
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How are codons like words in an instruction manual?
A. They tell cells the specific sequence of amino acids for making a protein.
B. They are made up of 26 different nucleotides that are like letters of the alphabet.
C. They tell cells the specific sequence of nucleic acids for making a nucleotide.
D. They are made up of 20 different nucleotides that each stand for one kind of amino acid.
They tell cells the specific sequence of amino acids for making a protein.
The membranes of neurons at rest are very permeable to _____ but only slightly permeable to _____. hints the membranes of neurons at rest are very permeable to _____ but only slightly permeable to _____. na+; cl– k+; na+ k+; cl– na+; k+
Neuronal membranes at rest are highly permeable to potassium ions (K+) and slightly permeable to sodium ions (Na+), which contributes to the neuron's resting membrane potential.
The membranes of neurons at rest are very permeable to potassium (K+), but only slightly permeable to sodium (Na+). In its resting state, a neuron's cell membrane has numerous potassium leak channels that allow for the efflux of K+ ions, contributing to the negative resting membrane potential inside the neuron. On the other hand, the permeability of the neuron's membrane to Na+ is significantly lower; there are very few sodium leak channels, and the Na+ ions that do enter are actively pumped out by the sodium-potassium pump.
if you start with a single bacterium, capable of dividing every 20 minutes, how many bacteria would you have after just 4 hours
Answer:
4096
Explanation:
Multiple 1 (original bacterium) by 2, 12 times
1*2*2*2*2*2*2*2*2*2*2*2*2 = 4096
4096 bacteria would be present after 4 hours as they grow via binary division.
What is bacteria?Bacteria is prokaryotic unicellular microorganism.They are found in extreme harsh conditions.Bacteria has hair like structure that helps in their locomotion.Bacteria grow through binary division.What do you mean by binary division?It is a type of cell division in which one cell give rise to two identical daughter cells.As it is given that bacteria divides at every 20 minutes mean 2 cells are formed from 1 cell. And after 40 min 8 (2∧n) bacterial cells are present.
After 4 hours i.e., 240 min= 240/20=12.
So 2∧12 = 4096 cells are present.
Hence, the answer is 4096 bacterial cells.
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What are the benefits/risks associated with the addition of antibiotics and genetically modified
e. coli to cattle feed?
The single most important limiting factor in any terrestrial biome is
The right answer is available water.
The biome is an ecological unit of very large extent, covering a fraction of one or more continents and characterized by a set of plant and animal species that are specific to it.
The tropical rain forest, the temperate forest, the boreal forest, the grassland, the savannah, the scrub, the desert and the tundra are biomes. Most often, biomes refer to a terrestrial community, but aquatic communities can also be classified as biomes. Marine biomes include coral reefs and deep seabed. Freshwater biomes include lakes, ponds and streams. Their presence or absence indicates the presence of water (or not) in the vicinity of the terrestrial biome.
In which days of mansturation cycle no egg will be there ?????
Final answer:
The menstrual cycle includes a phase called ovulation, typically around day 14 of a 28-day cycle, when an egg is released and can be fertilized. Outside the context of ovulation and after menopause, no viable eggs are present or released.
Explanation:
The question is addressing the menstrual cycle and the availability of an egg for fertilization. In a typical cycle, ovulation occurs around the midpoint of the cycle, nearly day 14 of a 28-day cycle. However, eggs are not available at all times during the menstrual cycle. During menopause, which usually happens to women in their mid-40s to mid-50s, the ovaries lose their sensitivity to Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). As a result, menstrual periods become less frequent and finally cease, leading to the point where no eggs are matured and released, making natural conception impossible.
Moreover, outside of the reproductive years and outside the ovulatory phase of the menstrual cycle, eggs are not mature or released. During menstrual cycles, an egg, once released during ovulation, is viable for fertilization for only about 12-24 hours. If it is not fertilized within this time frame, it will degenerate and be reabsorbed by the body. If fertilization does not occur, the menstrual cycle progresses to menstruation, and the cycle starts anew without an egg present until the next ovulation.
Which part of the reproductive system and a fluid that provides a source of energy for the active sperm?
What stomach secretion is needed to produce mature erythrocytes?
A camel's hump is an example of what adaptation
The release of endotoxins as bacteria are destroyed by phagocytes causes the phagocytes to release tumor necrosis factor (tnf). the life-threatening loss of blood pressure due to the action of tnf is called __________.
Why are transport proteins multipass rather than single-pass integral membrane proteins?
Transport proteins are multipass rather than single-pass integral membrane proteins because they have multiple transmembrane domains that allow them to interact with and transport specific substances.
Explanation:The integral proteins involved in facilitated transport are referred to as transport proteins. These proteins are transmembrane proteins that function as either channels or carriers. While channels form a hydrophilic pore through the membrane layers, carriers bind with the substance and aid its diffusion through the membrane. Transport proteins are multipass rather than single-pass integral membrane proteins because they have multiple transmembrane domains that allow them to interact with and transport specific substances.
Transport proteins, which are integral membrane proteins, typically have multiple transmembrane domains that span the lipid bilayer of the cell membrane. These transmembrane domains create a channel or pathway through which specific substances can be transported across the membrane.
Because they have multiple transmembrane domains, transport proteins are referred to as multipass integral membrane proteins. This structural feature allows them to interact with and facilitate the movement of specific substances, such as ions or molecules, across the membrane.
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Non-avian reptiles can produce hyperosmotic urine using which structure?
a.salt glands similar to birds
b.the rectum where uric acid is produced
c.water-reabsorbing cloaca
d.water-reabsorbing ureters
e.highly developed kidneys
Answer:
The correct answer is option B, The rectum where uric acid is produced
Explanation:
The hyperosmotic urine of non- avian mammal is produced in the hindgut anterior to the rectum in reptiles while in case of insects it is produced in their extensive rectum. In general, waste product is released from the hemolymph into the gut for expulsion through the Malpighian tubules which are connected to the alimentary tract between the midgut and hindgutf rectum that absorb solutes and water from urine and make it hyperosmotic urine
Non-avian reptiles use their highly developed kidneys to produce hyperosmotic urine, effectively allowing them to conserve water and survive in arid conditions.
Explanation:Non-avian reptiles can produce hyperosmotic urine through their highly developed kidneys. Hyperosmotic urine contains a high concentration of salts and other solutes. In general, reptiles have set up their bodies to conserve as much water as possible because they live in dry and arid areas. Their kidneys play a critical role in this water conservation as they filter the blood, reabsorb water and leave behind a concentrated urine. This is especially crucial because it allows for the excretion of metabolic waste products in a form that minimizes water loss.
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Which of the following is a good scientific hypothesis? Gasoline is made up of particles that can not be seen. If a plant is given less oxygen than what is present in the air, the plant will grow more slowly. People who smoke cough more often. More people carry laptops at the airport on Tuesdays then on Saturdays.
Answer:
People who smoke cough more often.
Explanation:
The other guy is wrong!
________ is a common boundary where different parts of a system interact.
Answer:
The answer is the interface
Explanation:
Interface is defined as the surface between two portions of matter or the space in which they have a common boundary. For example, the interface allows to know the separation surface between two liquids. In addition to this, the interface allows molecules or particles to cross the membrane, for example, what happens in the osmosis process.
Human waste, excreted from the digestive system, _____.
Human waste, excreted from the digestive system, _____.
is considered sterile
contains about 50 percent bacterial cells
has passed through the liver
started as food delivered to the stomach via the tracheaWhich statement is true about the rates of cell division in eukaryotes?
A. They remain the same for the life of the organism
B. They are faster than that of prokaryotes
C. They increase with the age of the organism
D. They vary greatly within an organism
Eukaryotic cells multiply at varied speeds. Yeast cells divide and double in 2 hours, but plant and mammal cells take 10–20 hours. Therefore, option (D) is correct.
Why do prokaryotic cells divide faster than eukaryotic cells?Prokaryotic cell division, also known as binary fission, is a simpler and more rapid process than eukaryotic cell division. Bacterial populations can expand quite quickly due of how quickly their cells divide. Prokaryotic cells can replicate more quickly than eukaryotic cells because they typically only contain one circular chromosome. A prokaryotic cell can really go through two cycles of DNA replication before the cell divides.
Eukaryotic cells multiply and develop at remarkably varied speeds. While the majority of plant and animal cells take between 10 and 20 hours to divide and multiply, yeast cells may do so in just 2 hours.
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Cell division seems to be limited by the length of chromosomal structures called ____________.
ï‚· how many cells are produced at the end of mitosis and meiosis
A geologist noted that the sediment in an area differs in composition from the bedrock beneath it. Which statement best explains the geologist's observation? A.Wind, water, and plants can break down bedrock. B.Sediments form from the local bedrock. C.Wind and water can transport sediments to a new location. D.Species in an area change as bedrock becomes soil.
Answer: C.Wind and water can transport sediments to a new location.
According to the given situation, this can be concluded that the composition of the sediments is different from the bedrock beneath it because the sediments are deposited by the physical agents such as water, wind and others undergoing processes like weathering and erosion of the parent material and transporting the materials or sediments to the new locations.
What are groups of tissues working together to perform a specific function?
-cells
-organisms
-organs
-organ systems
Organs. Just took the test
Groups of tissues working together to perform a specific function are called organs.
Explanation:Organs are made up of different types of tissues that work together to perform a specific function in the body. For example, the heart is an organ made up of cardiac muscle tissue, connective tissue, and nerve tissue that work together to pump blood throughout the body. Organ systems, on the other hand, are groups of organs that work together to perform a specific function, such as the digestive system or the respiratory system.
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How does inappropriate land use, such as removing vegetation from hillsides and plowing fields parallel to a hillside, affect the erosion rates of that landscape? Explain your answer.
Answer:
increase in erosion
Explanation
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Which term do biologists use to describe the average number of individuals of a species per unit area?
Population density is the right term.
Population density of any species (plant, animal or humans) is the number of individuals found in a given unit of area. It is usually expresses as “X” species in “Y”
X = number of species
Y = unit of area , it can be square feet, Square meter, Square kilometer, Square yard etc.
For example , population of 1000 insects living in an area fo 1000 square feet has a population density of 1000/1000 insects per square feet = 1 insect per square feet.
What is a small, circular piece of bacterial dna found to carry only a few genes?
Emotional and psychological violence can cause as much harm as physical blows or injuries.
a. True
b. False
These techniques take advantage of the brain's consumption of glucose or oxygen and specifically look for which part of the brain is most active "during more generalized processing." the active part of the brain would require more resources than inactive areas.
When dietary intake of calcium is low, the body takes calcium from bone. when dietary intake of calcium is low, the body takes calcium from bone.
a. True
b. False?
Calcium salts in bone represent ____ percent of all calcium stored in
the body.