Explanation:
Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts.
16.
What term collectively describes the following substances: thickeners, colourings, flavourings and
dyes?
Food additive is term that collectively describes thickeners, colourings, flavourings and dyes.
What are food additives?"Food additives are substances added to food to preserve flavour or enhance taste, appearance, or other sensory qualities."Sugar, salt, vinegar, etc. helps in preservation of food.What are thickeners?"Thickeners are substances which increases viscosity of liquid. Examples: corn-starch, wheat flour, etc."Hence, the term collectively describing the substances: thickeners, colourings, flavourings and dyes is known as food additive.
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A researcher studied the development of resistance to antibiotics by bacteria. She studied several antibiotics to determine how long it took for bacteria to develop resistance. She found that, on average, it took eight years for bacteria to develop resistance to an antibiotic. In some cases, bacteria developed resistance to an antibiotic within a year, and none of the antibiotics were still completely effective on bacteria after 30 years.
How is this possible?
Answer:
See Explanation
Explanation:
Antibiotic resistance is said to have occurred when a given antibiotic drug is no longer effective against the target organisms. This is as a result of genetic mutation in the organism that enable resistance to the drug.
When a drug is being used against a particular organism, the organism gradually develops genetic mutations that helps it to inactivate the antibiotic drug and increase its chances of survival. These traits are passed on to offspring, hence the onset of resistance to antibiotic drugs.
There are different mechanisms of antibiotic resistance which include; Degrading the antibiotic drugs by the use of enzymes secreted by the organism, altering proteins present in the organism upon which the antibiotic drug acts and changing membrane permeability to antibiotic drugs.
3. Label the parts of the digestive system on the image below by typing in the organ name next to the corresponding letter.
Answer:
A. Salivary Gland (I believe)
B. Esophagus
C. Liver
D. Stomach
E. Pancreas
F. Small intestine
G. Large Intestine
In what kind of star system does one star sometimes block the light from another?
1. Open Cluster
2. Globular cluster
3. quasar cluster
4. eclipsing binary
59:14 Organisms that live in the tundra have developed unique adaptations that aid in their survival. Ursus maritimus has a variety of adaptations which enable it to survive in the tundra. It is the largest terrestrial carnivore, but it is also an excellent swimmer that spends much of its time in and near the water hunting its favorite food. It has large paws with small bumps to provide traction as it walks across the ice. Its fur is helpful as camouflage during the winter months, but not as helpful during the summer. Which organism has the adaptations described that enable it to survive in the tundra
Answer:
Polar bear.
Explanation:
Polar bear is the organism that has the adaptations which enable it to survive in the tundra. the polar bear has white skin and fur on all its body which helps it to camouflage in the ice and to prevent the loss of heat from its body. The polar bear catch its favourite food in the water which is the fish that provide high nutrition to the polar bear. It is a good swimmer and have large paws with small bumps that helps it to provide support while walking on the ice. The scientific name of polar bear is Ursus maritimus whose features are described in the question.
What is adaptation? What are the two types of adaptation? Give an example each.
Answer:
adapting can be learning from your environment and ways to survive etc.
Adapting can also go to sexual reproduction to survive diseases unlike asexual reproduction.
An adaptation is a trait which increases the relative fitness of an individual. The fitness of an individual has 3 components: 1. Probability of survival to reproductive age. 2. Probability of attracting a mate. 3. Average number of offspring. Any trait which increases the fitness of an individual by positively impacting one of these three aspects is considered an adaptation.
There are 2 types of adaptation: physical and behavioral. These are self-explanatory. Physical adaptations could include things like adaptations to morphology or physiology of an organism. Behavioral adaptations are adaptations to, well . . . behavior :)
Using the following words, explain the difference between
DNA and RNA.
Nucleus, uracil, double helix
Which property of lights helps in the formation of shadows
:
The reflection and rectilinear propagation of light helps in the formation of shadows. The property that light neither can pass through an opaque object nor can bend to a large extent by itself leads to shadow formation.
Explanation:
#Hope_it_helps
PLS HELP, BRAINLIEST POINTS WILL BE GIVEN
Research the Clements successional theory and answer the following questions.
Were any scientific investigations conducted for proposing the theory? Was this theory tested or simply expected?
Were there any objections to the Clements theory?
Has the theory been subjected to peer review and publication?
Did the scientific community accept the theory?
Answer: The theories are tested under the controlled conditions of the experimental set up. On the basis of the above description, we can say that the scientific investigations are done in the form of experimentation trials before proposing a theory. The theory is tested and is not simply expected.
A theory is a well-established, tested explanation that provides a unified description of some aspect of the natural world.
Henry Gleason objected to the Clements theory. He emphasized that succession is more dependent on abiotic factors and their interactions with the environment.
Yes, the theory was published and widely spread.
Nearly all (around 97%) of the scientific community accepts evolution as the dominant scientific theory of biological diversity. Scientific associations have strongly rebutted and refuted the challenges to evolution proposed by intelligent design proponents.
Clements described plant succession as a developmental process that ultimately resulted in a mature, or climax, community. This theory was tested, objected, and was not widely accepted.
What is Clements successional theory ?Clements concluded plant succession as a developmental process by which the community acquired well-defined series of stages.
This ultimately resulted in a climax community. The climax community was indicator and expression of the climatic conditions determining it.
Yes there were scientific investigations conducted for this theory.Yes this theory was first tested and not simply excepted. It was first tested for being theory of plant succession.Yes there were objections for this theory that expressed by Gleason. He assumed that identification in Clement theory of particular kinds of vegetation assumed to be of too much homogeneity.The theory was published but not widely among classical economists. It went through review before getting published.Thus, here one can conclude that Clements successional theory was tested, objected, and published.
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Which step of cell division is the end of the cycle where 2 daughter cell have separated?
A Interphase
B. Anaphase
C. Metaphase
D. Cytokinesis
Answer:
D
Explanation:
im pretty sure its cytokinesis
Answer:
D.
Explanation:
distinguish between plant and animal cell
Plant cells have a cell wall, but animals cells do not. Cell walls provide support and give shape to plants. Plant cells have chloroplasts, but animal cells do not
Explanation:
hope this helps
Based on the living things in the pyramid, please tell me what examples would fit into these categories:
Primary Producers, primary consumers, secondary consumers, and tertiary consumers.
Answer:
Primary producer = Oak tree leaves
Primary consumer = Caterpillars
Secondary consumer = Blue j a y s
Tertiary consumers = Hawk
Explanation:
An energy pyramid is a graph which shows how energy is transferred or flows from one trophic level to the next. Organisms which occupy the same level in the food chain within an ecosystem belong to the same trophic level.
The shape of an an energy pyramid is a pyramid indicating that the number of living things as well as the amount of energy flow decreases as one goes from one lower trophic level to the next higher level.
At the base of the pyramid are the primary producers which use energy of the sunlight to manufacture their own food. Example is the Oak tree.
The next higher level is the primary consumers who feed directly on the primary producers. For example caterpillars.
The next higher level is the secondary consumers who feed on the primary consumers. For example the Blue j a y s.
The highest levelin the pyramid is the tertiary consumers who feed on the secondary consumers. For example, the hawk.
_____ occurs when a species is not able to adapt to changing environmental conditions, not able to successfully reproduce, and dies out.
Explanation:
Extinction occurs when a species is not able to adapt to changing environmental conditions,not able to successfully reproduce and dies out.
5. Which climate type forms the thickest soil the quickest?
Brainiest will be mark, if correctly answered.
No link!!!! I can’t open it!!!!
The process of upwelling occurs as a result of which of the following?
A. warmer, less dense deep water that floats to the surface
B. surface waves that mix surface and deep water
C. cooler dense water rises to the surface, replacing warmer water
D. sunlight that warms deep water that rises to the surface
Answer:
The answer you are looking for is A
Explanation:
Answer:
A
Explanation:
brainliest please?
Which is the BEST example of a community responding to an external factor?
What does aerobic respiration require?
Answer:
Aerobic respiration requires oxygen.
3 ways in which our atmosphere is not like a greenhouse
( HELP ME PLEASE)!!!!
Answer:
1.) The atmosphere is an open system, with heat energy always escaping to space. Unlike the glass it absorbs 95% of the UV in the creation of ozone. This sounds insignificant, but one scientist argues variation in the 5 percent is the cause of warming.
2.) There are no winds in a greenhouse. In the greenhouse and in the atmosphere energy is partly transferred from the heated surfaces through collision between air molecules (conduction). However, in the atmosphere a large portion of that heat is transported vertically by rising air currents (convection), and also horizontally by advection or commonly wind. There are no winds in a greenhouse.
3.) Heat reduction in a greenhouse requires a physical change with a vent to let LW escape or a screen to block SW entering. Clouds are nature’s screen. However, they can block SW and LW, such that we have little idea how clouds work to modify temperatures
Explanation:
The basic idea of a greenhouse is that sunlight or shortwave (SW) energy passes through the glass and heats surfaces. The surfaces radiate that heat as longwave (LW) energy or sensible heat (heat you can feel). LW cannot pass through the glass, so is trapped and raises the temperature in the greenhouse; the glass acts like a one-way valve. A greenhouse is a closed system because the heat cannot escape unless artificially changed by opening vents or blocking sunlight. The glass supposedly represents the entire atmosphere. It also blocks 100 percent of the ultraviolet (UV) portion of the sunlight.
In a certain ecosystem, there is a large number of rabbits which graze upon grass. Rabbits are herbivores, which means they only eat plant material. Later, a population of wolves is introduced into this ecosystem. Wolves are carnivores, which means they only eat meat.
How will the introduction of wolves into this ecosystem affect the other organisms?
A.
The change will be helpful to the rabbits and the grass.
B.
The change will be harmful to the rabbits but helpful to the grass.
C.
The change will be helpful to the rabbits but harmful to the grass.
D.
The change will be harmful to the rabbits and the grass.
Answer:
b
Explanation:
A probability of 1/4 is equal to a probability of 75%
True or False
Você sabe de onde vem á água da sua casa?
Answer:
No se compa
Explanation:
no se compa no seconpa
A mutation in a gene results in an animal that cannot make a protein that allows muscles to contract which of these is most likely to happen
Answer:
it will get weaker give water
Explanation:
feed it bread
A heritable change in a person's genetic makeup is referred to as a mutation. Changes can be substantial or negligible. Chromosomes or chromosome parts may be lost, added, duplicated, or rearranged in significant alterations. Thus, option B is correct.
What mutation in a gene results in an animal?High-energy sources like radiation or chemicals in the environment can both result in mutations. They may also emerge on their own during DNA replication. The two main kinds of mutations are chromosomal abnormalities and point mutations.
Mutations can alter an organism's phenotype, which is its outward appearance, or they can have an impact on the way DNA encodes the genetic information (genotype). When mutations happen, they might kill an organism completely or only partially.
The likelihood that a gene mutation will cause an animal to be unable to produce the protein necessary for muscles to contract is that the animal will perish before producing any progeny.
Therefore, The animal will die before having any offspring.
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The above given question is incomplete. The complete question is given below:
A mutation in a gene results in an animal that cannot make a protein that allows muscles to contract. Which of these is most likely to happen? * A. The gene will eventually be found in all animals of the species. B. The animal will die before having any offspring. C. The gene will change back to the normal form. D. The animal will pass this gene on to many offspring.
What are the 4 steps of mitosis? What occurs during each?
Explanation:
There are four stages of mitosis: prophase, metaphase, anaphase and telophase.1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3) Anaphase: sister chromatids are pulled to opposite poles of the cell 4) Telophase: nuclear envelope reforms, chromosomes unfold into chromatin, cytokinesis can begin The order of the stages of mitosis can be remembered using the mnemonic PMAT.
Which statement describes characteristics of planarians?
They live in freshwater, are free-living, and reproduce sexually and asexually.
Most planarians are found in freshwater. Since they reproduce through fission, they reproduce asexually. However, since they are heteromorphic, they also reproduce sexually.
A man lifts weights and exercises until he is very muscular. He works out
with the hope that his children will also be very strong. A problem with his
idea is that:
characteristics that are acquired during one's lifetime cannot be passed on to
offspring
not all offspring want these new characteristics
these characteristics may make the offspring less likely to survive
offspring are born weak
Answer:
This man hasn't been taught genetics.
Explanation:
That's not how they work-
please help me in biology! I will give brainliest.
Answer:
1. logistic population growth
2. 72
3. week 2 and weeks 4 - 10
4. 2.78%
5. 12
PLEASE HELP ASAP
46. If a species has experienced a genotype mutation that has greatly reduced its population size, but later the population increases, which of the following is most likely the consequence on the surviving population?
Organisms in the surviving population will be genetically superior, which will strengthen the population.
The natural selection of the surviving population will move from a normal selection to a disruptive selection.
The surviving population will be very different than the original population.
The surviving population will have very little genetic variation.
Answer:
Organisms in the surviving population will be genetically superior, which will strengthen the population
Explanation
Mutation are the fundamental forces of evolution,as they fuel the variability in the population
The following is most likely the consequence on the surviving population as Organisms in the surviving population will be genetically superior, which will strengthen the population.
What is genotype mutation?Mutation is the last supply of latest alleles in plant pathogen populations. Small populations have fewer alleles because of genetic glide and additionally due to the fact fewer mutations are generated in a small populace.
As a end result of the more occurrence of useful mutations, large populations of longer sequences can growth their health greater easily. It may also appear unexpected that populace length makes a distinction at mutation prices this small, however large populations have a bonus at numerous levels.
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Critically explain three aspects of growth
-toddler.
-childish.
- teenager.
-adult.
- older (over 50 years)
autism
i'm working on a lab report on water erosion on edg lol
pls help i'm so behind
is it okay??
Some facts about Water erosion :
Water erosion is the detachment and removal of soil material by water. The process may be natural or accelerated by human activity. ... Water erosion wears away the earth's surface. Sheet erosion is the more-or-less uniform removal of soil from the surface.
Water and Wind Erosion (cause)
Water erosion is the removal of soil by water and transportation of the eroded materials away from the point of removal. Water action due to rain erodes the soil and causes activities like gully, rill, and stream erosion leading to the downstream effects of flooding and sedimentation.
8. What adaptation helps desert plants keep animals away?
Answer:
Well there are pr ick les, and some may have other adaptations
Explanation: