According to the concept of “survival of the fittest," if a population of birds eats worms that they find deep under ground by using their beaks, which members of the bird population would be more fit?
A) birds that have flatter beaks
B) birds that have longer beaks
C) birds that have wider beaks
D) birds that have brighter beaks
The Answers to Darwin's Theory quiz!
1. B. coat color for blending in with dry grass
2. C. Individuals that are well suited to the environment reproduce, and those that are not well suited die before they reproduce.
3. B. overpopulation
4. B. competition among individuals for available food sources
5. B. fur color that closely matches the eucalyptus bark color
6. B. Island finches resembled mainland finches, but were not the same species.
7. D. He proposed that natural selection is the primary mechanism of evolution.
8. A. a process that selects variations that help with survival and that spreads the variations to more offspring
9. B. birds that have longer beaks
10. D. point 4
Edge 2021
According to the concept of "survival of the fittest," if a population of birds eats worms that they find deep under ground by using their beaks, birds that have longer beaks would be more likely to survive, which is present in Option B.
What is natural selection?Natural selection is a process in which the only organisms that can adapt to the environment and its changing conditions are chosen by nature, such as in the case of the Darwinian finches. when different types of birds are present in the ecosystem and all can get their favorable food source, but when an adverse climate occurs and food is only available in deep ground, only long-beaked birds can survive because they can get food. This explains the survival of the fittest by the natural selection.
Hence, as per “survival of the fittest," if a population of birds eats worms that they find deep under the ground by using their beaks, birds that have longer beaks would be more likely to survive, which is present in Option B.
Learn more about the process of natural selection here.
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although farmers once used only organic fertilizers to replenish nutrients in the soils, some have been replaced with synthetic fertilizers. Although synthetic fertilizers keep nutrient levels high and increase crop yields, they can have an effect on the environment. Which of the following would most likely lead to a ban of synthetic fertilizers?
A. Synthetic fertilizers help prevent the spread of diseases.
B. Synthetic fertilizers are less expensive than organic fertilizers.
C. Synthetic fertilizers increase the potential for environmental pollution.
D. Synthetic fertilizers provide nutrients, like nitrogen that can disrupt nutrient cycling.
Answer: C. Synthetic fertilizers increase the potential for environmental pollution.
Explanation:
A fertilizer is a material which when applied to soil ,supply one or more plant nutrients essential to the growth of plants.
Fertilizers could be organic ( obtained from nature ) or could be synthetic ( made artificially in labs).
Though synthetic fertilizers such as urea keep nutrient levels high and increase crop yields but they also kill beneficial microorganisms in the soil that convert dead human and plant remains into nutrient-rich organic matter. The non biodegardable synthetic fertilizers seep into groundwater and increase its toxicity, causing water pollution.
Synthetic fertilizers damage the natural makeup of the soil. Plants that grow in soils which use synthetic fertilizers are deficient in iron, zinc, carotene, vitamin C, copper and protein.
What type of bonds connect the sugars to phosphates and the sugars to bases? Weak or strong?
What type of bond connects a base to a complementary base in a base pair? Weak or strong?
What type of bond connects a base to a complementary base in a base pair? Hydrogen or Covalent?
Answer-
All the bonds are hydrogen bonds and this bond is strong
Give three differences between parenchyma and selerenchyma?
Answer:
Parenchyma cells have thin primary walls and usually remain alive after they become mature while Sclerenchyma cells have thick lignified secondary walls and often die when mature.
Parenchyma forms the "filler" tissue in the soft parts of plants while Sclerenchyma provides the main structural support to a plant.
Parenchyma cells are usually loosely packed with large intercellular space while Sclerenchyma cells has no intercellular spaces between the cells.
The graph shows the effect of different wavelengths of ultraviolet light on mutation rate in
human skin cells. Which of the statements below supports the claim that UV radiation has an
effect on mutation rates? Select all that apply.
A)
Only UVA has an effect on mutation rates in human
skin cells.
B)
Only UVB has an effect on mutation rates in human
skin cells.
C)
Both UVA and UVB increase mutation rates in human
skin cells.
D)
A combination of UVA and UVB will increase the
mutation rate even more.
The independent variable is causing an effect on the
dependent variable in this experiment.
Answer: C and E
Explanation:
USA test prep
Answer:
C) Both UVA and UVB increase mutation rates in human skin cells.
E) The independent variable is causing an effect on the dependent variable in this experiment.
Explanation:
Got it right on USA Testprep
Which best describes the importance of meiosis to living organisms? *
O genetic variation and growth
O growth and development
O development and sexual reproduction
O sexual reproduction and genetic variation
What is the function of mitochondria in prokaryotes?
Answer:
Prokaryotes lack mitochondria.
a
A stone 'X' of mass 2 kg is at the height of 2 m from the ground level
Another similar stone 'Y' of mass 4 kg is at the height of 4 m from the ground
level. What is the difference between their potential energy?
un minutes Calculate
Answer:
120 joule.
Explanation:
Given
For the stone X
Mass (m) = 2 kg
Height (h) = 2 m
Acceleration due to gravity (g) = 10 m/s²
Then we have the formula to calculate the potential energy
P.E 1 = mgh
= 2 * 10*2
= 40 joule
Now for Stone Y
mass (m) = 4 kg
height (h) = 4 m
acceleration due to gravity (g) = 10 m/s²
Now
P. E2 = mgh
= 4 * 10* 4
= 160 joule
Now the difference between their potential energy is
= P. E2 - P. E 1
= 160-40
= 120 joule
Hope it will help you :)
Plant and animal cells both have cell membranes and nuclear membranes. However, plant cells have a structure that animal cells do not, known as a: ____
Answer:
cell wall and chloroplast
How long ago was our solar system born from its stellar nebula?
Answer:
Approximately 4.6 billion years ago
Explanation:
The charged particles in the beams that Thomson studied came from atoms. As these particles moved away from their original atoms, they formed a visible beam. The current model of the atom includes protons, neutrons, and electrons.
What is the best use of an atomic model to explain the charge of the particles in Thomson’s beams?
An atom’s negative particles are surrounded by positive matter, so the positive particles are easier to remove.
An atom’s positive particles are surrounded by negative matter, so the negative particles are easier to remove.
An atom’s smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to remove.
An atom’s larger positive particles are at a distance from the central negative particles, so the positive particles are easier to remove.
The question to the above information is;
What is the best use of an atomic model to explain the charge of the particles in Thomson's beams?
Answer;
An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to remove.
Explanation;
-Atoms are comprised of a nucleus consisting of protons (red) and neutrons (blue). The number of orbiting electrons is the same as the number of protons and is termed the "atomic number" of the element.
J.J. Thomson discovered the electron. Atoms are neutral overall, therefore in Thomson’s ‘plum pudding model’:
atoms are spheres of positive chargeelectrons are dotted around insideAnswer:
Its C on edge
Explanation:
If a P-Wave took 5 minutes to reach a seismic
station and the earthquake began at 4:23:05, what
time did the P Wave reach the station?
Answer: 4:28:05
Explanation: if it takes 5 minutes to reach a station, just add 5 to the amount of minutes you already have (23) to get 28. And the hour and seconds stay the same.
When a strong acid is added to a strong base a_________________ reaction occurs in the product will have a PH closer to_____
A. Neutralization,7
B. Ionic,0
C. Concentration,14
Answer:
A
Explanation:
Acids and bases when mixed neutralize eachother. and 7 is neutral on the PH scale
the receptionist said to the manager,'I have booked your flight tickects for Monday'. change into imdirect speech
Answer:
The correct answer is- The receptionist told the manager that he had booked his flight tickets for Monday
Explanation:
Indirect speech is the expression any statement of a consverstaion that occured in past without quoting explicitly. Indirect speech is the stating any quoted statement in simple statement. In this type of speech some grammer and certain noun and pronoun change accordingly.
So the correct indirect speech of the receptionist said to the manager,'I have booked your flight tickects for Monday'. would be The receptionist told the manager that he had booked his flight tickets for Monday
15. Mendel crossed a true-breeding plant that produced green seeds with a true-breeding
plant that produced yellow seeds to produce an F1 generation. The entire Fi generation
produced yellow seeds. Then he crossed the F1 offspring with each other to produce the
F2 generation. From the F2 generation, he counted 6022 yellow seeds. Which of these is
the most likely estimate of the number of green seeds he collected from the Fz
generation?
a. O
b. 2000
C. 6000
d. 18000
Answer:
Answer is option b= 2000
is meiosis genetically identical?
Answer: No I read it on briticanna.com
Explanation:
How is an ectotherm most likely to maintain homeostasis during cold weather?
A. By sitting on a warm surface
B. By lying in the shade
C. By shivering
D. By sweating
Ectotherm describes the animals that use external sources to maintain their body temperature. They will maintain their homeostasis in cold weather by sitting on a warm surface. Thus, option A is correct.
What are ectotherms?Ectotherms are animals that cannot regulate their body temperature on their own and are dependent on external sources to maintain their body heat.
They have to depend on environmental sources like a warm place to maintain their body temperature during the cold weather. They cannot sweat or shiver to maintain homeostasis.
Therefore, during the cold, ectothermic animals sits on warm surfaces to maintain homeostasis.
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Why is the human heart cooled for surgery?
Answer:
By cooling the heart, its need for oxygen is reduced. This allows surgeons to work on the heart for two to four hours without damaging the heart tissue.
Answer: By cooling the heart, its need for oxygen is reduced.
Explanation:This allows surgeons to work on the heart for two to four hours without damaging the heart tissue.
If you know abt respiration and photosynthesis pls HELP!
Answer:
1. Respiration
2. Photosynthesis
3. Both
4. Respiration
5. Photosynthesis
6. Respiration
7. Respiration
8. Photosynthesis
9. Respiration
10. Both
11. Both
12. Photosynthesis
13. Photosynthesis
14. Respiration
15. Photosynthesis
16. Photosynthesis
17. Respiration
18. Respiration
If the food on the island is small seeds, what finch is best adapted? Explain why
Answer:Adaptation in Darwins Finches. Beak depth, which is correlated with body size and the ability to crack larger seeds, varies according to drought conditions: plants produce fewer, harder seeds in dry years and more, softer seeds in wet years. Only larger birds with deeper depths survive in drought years.
Explanation:
Does Natural Selection affect individuals or populations? EXPLAIN.
Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others.
Nerve cells that can detect chemicals are:
A. chemoreceptors.
B. chemtransductors.
C. limbic system indicators.
D. neurotics.
Answer:
its Chemoreceptors
Explanation:
A chemoreceptor, also known as chemosensor, is a specialized sensory receptor cell which transduces a chemical substance to generate a biological signal.
Which is held constant when a gas obeys Boyle's law?
A. motion
B. pressure
C. temperature
D. volume
Answer:
B
Explanation:
ganyan rin sagot ko sa module ko
When a gas obeys Boyle's law, the temperature is held constant. The correct option is C.
What is Boyle's law?Boyle's law is given by Charles Boyle. It is a gas law that states the pressure decrease with the increase in the volume and the temperature remain constant. In other words, the pressure exerted on gas is inversely proportional to the volume of the gas.
The law shows the relationship between pressure and volume, with the temperature remaining constant. There are three gas laws which are given by different scientists. These laws show the relationship between two variables and the third remains constant. These variables are temperature, volume, and pressure.
Thus, the correct option is C. temperature regarding the gas obeys Boyle's law, and it remains constant.
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list one part of the cell theory in your own words, explain what it means
One part of the cell theory is that pre-existing cells can form more cells
This means that cells that currently exist are capable of creating more cells, however it’s a slow process
Please help As fast as you can!
which describes a eukaryotic cell,but not a prokaryotic cell?
Why is Linnaeus called the father of taxonomy?
He created the classification level called domain.
He developed the modern system of naming organisms.
He explained the steps that led to the formation of a species.
He used more than one common name for the same organism
Answer:
he developed the modern system of naming organisms
Traits of organisms are a direct result of two factors: 1) the genetic material present in previous generations and 2) the type of reproduction, sexual or asexual. Which of the following is true of cellular division? *
a. Meiosis is cellular division for and sexual reproduction.
b. Asexual reproduction requires mitosis for cellular division.
c. Mitosis is cellular division for asexual and sexual reproduction.
d. Sexual reproduction requires mitosis for cellular division.
Answer:
it A
Explanation:
Answer:
Its A
Explanation:
Lol bc someone else put it!! And also I got the answer right!
what is the cause and effect of stop codone mutation?
Answer:
Nonsense mutations occur when a premature nonsense or stop codon is introduced in the DNA sequence. When the mutated sequence is translated into a protein, the resulting protein is incomplete and shorter than normal. Consequently, most nonsense mutations result in nonfunctional proteins.
Hope this helped! :)
write the importance of thermometers.
You can check your body temperature it is useful in medical field.
