Answer:
a common ancestor that used these structures to perform one or more specific functions
Explanation:
A vestigial structure is an organ that has no obvious function in an organism, but it has been used by a past ancestor to perform one or more specific functions. Thus, vestigial structures have been retained in the course of evolution, but they lost their ancestral functions. Vestigial structures/organs can be detrimental for the organism because it is required energy to maintain them and they may suffer diseases (e.g., cancer). Some well-known examples of vestigial organs/structures include, among others, the wings of ostriches and cormorants, the human appendix, etc.
During fertilization, sperm cells will either contain an x or a y chromosome in addition to 22 other chromosomes, totaling______
Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies born at different weights.
A graph entitled Percentage of Babies born at Different Weights has weight in pounds on the horizontal axis, and percentage on the vertical axis. A small percentage of babies are born at the low and higher birth weights, and a greater amount are around 7 to 8 pounds.
Which statement is a valid claim that could be made using the data in the graph?
Directional selection is occurring because the graph favors an extreme.
Stabilizing selection is occurring because the average is favored.
Disruptive selection is occurring because the two extremes are favored.
Biodiversity variation is occurring because there is an increase in trait variation.
Answer:
C
Explanation:
Otherwise people wouldn’t have differences
Answer:
C!!! :))
Explanation:
I tookt the test and got it right.
explain how at least three pieces of evidence support the theory of evolution.
Dont put any link or else I won’t give brainlist, just answer.
Answer:
1. Fossil evidence
2. Homologous similarities.
3. Molecular evidence
Somebody please help? Thanks
Answer:
I don't know man i am guessing the first one and the third one
Explanation:
Answer:
Should be A and C.
Explanation:
Acquired traits are traits a living thing gets over time, such as a scar.
Number the steps from when a stimulus is received to when the body reacts.
_____ The stimulus is received by sensory receptors.
_____ Motor neurons cause muscles to contract so the body can react to the stimulus.
_____ The brain processes the information through interneurons.
_____ Interneurons transfer response information to motor neurons.
_____ Sensory neurons carry stimulus information to the brain or spinal cord.
Answer:
The correct answer is -
1 - The stimulus is received by sensory receptors.
2 - Sensory neurons carry stimulus information to the brain or spinal cord.
3 - The brain processes the information through interneurons.
4 - Interneurons transfer response information to motor neurons.
5 - Motor neurons cause muscles to contract so the body can react to the stimulus.
Explanation:
In most of the organism including humans body response according to the stimulus it receives. The stimulus is received by the sensory receptors to the sensory neurons or afferent neurons that are present on the skin, nose tongue ears, or eyes. Many other receptors and pain receptors present on various internal organs as well.
These sensory neurons carry the stimulus to the spinal cord or brain where this information received by the stimulus process through interneurons and transfer the response of the particular stimulus to the motor neurons. These motor neurons result in muscles contracts so the body can react.
Why is adequate lighting necessary in a balanced aquarium?
a. Fish need light to see their food.
b. Fish take in oxygen in the dark.
c. Plants expel carbon dioxide in the dark
d. Plants grow too rapidly in the dark.
Answer:
A. Fish need light to see their food
Explanation:
B is incorrect because fish take in oxygen constantly to respirate. If they only took in oxygen when it was dark they would die.
C is incorrect because expelling CO2 is also a constant process as a part of the reactions that take part inside living organisms, so it happens constantly (a bit like B)
D is incorrect because plants need light for food (photosynthesis) and would most likely die or have stunted growth if left in the dark.
A is correct because when it is dark, fish rely on other senses to find food as most fish cannot see as well in the dark, therefore when they have light they can see their food more easily.
Hope this helped!
Which is an example of a scientific theory?
A. On average, larger mammals sleep longer than smaller mammals.
B. If a plant receives pure water, then it will grow more than one that
receives salt water.
C. Organisms evolve over time due to changes in heritable physical
characteristics.
D. If a person takes at least one vitamin per day, then it will reduce a
person's level of tiredness.
HELP PLEASE!
Answer: Organisms evolve over time due to changes in heritable physical characteristics.
Explanation:
There are a few things to look for when distinguishing between a nonscientific theory and a valid scientific theory. One thing to consider is if there are any published literature, experimental studies, and data available to support the theory. Most scientific theories have data and information tied to them. Another factor to examine is who has developed the theory. A scientific theory will always be supported by evidence with large quantities of data and testing. An example of a scientific theory is the theory of evolution, which observes changes in heritable physical traits over time in an organism. A hypothesis might be that all organisms evolve at the same rate.
Organisms evolve over time due to changes in heritable physical characteristics is an example of a scientific theory known as evolution. Thus, option C is correct.
What is evolution?Evolution is the scientific theory that explains that "a change in the characteristics of biological populations over next generations.
According to scientists RNA is the first existing molecule on earth that replicate by itself and the process of evolution lead to advanced forms of life.
These characteristics are easily trasfered from one generation to other generation.
Therefore, Organisms evolve over time due to changes in heritable physical characteristics is an example of a scientific theory known as evolution. Thus, option C is correct.
Learn more about evolution here:
https://brainly.com/question/13492988
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What level of organization is shown in the image
Which of the following is a molecule with more than one element?
O Atom
O Bacteria
O Compound
Organism
Answer:
compound
Explanation:
as cited from coolgalapagos.com, "Molecules made of more than one kind of element are called compounds. A compound is formed when one kind of atom (an element) joins to at least one other kind of atom of a different element."
Which of the following is evidence that a chemical reaction has taken place?
Check all that apply. *
- unexpected color change
- release/absorb heat energy
- melt from solid to liquid
- solid precipitate forms
- gas bubbles form
Answer:
color change
release/absorb energy
solid precipitate forms
gas bubbles.
The wrong answer is melt from solid to liquid.
1Which of the following animals is a primary consumer?
GIVING BRAINLIEST
Lodgepole pine trees produce seeds in cones. The cones open after being exposed to high temperatures created by wildfires. How does this adaptation help the lodgepole pine survive?
A) It allows the lodgepole pine tree to make more seeds in cones that are hard to open.
B) It creates more wildfires for the lodgepole pine tree to reproduce.
C) It makes the seeds travel and grow in areas where there are no wildfires.
D) It helps the lodgepole pine tree to protect the seeds and to reproduce.
Answer:
D
Explanation:
A layer of resin and woody tissue sticks the cones' scales together. The seeds are locked in tight, and the cones can't open unless they're exposed to VERY high temperatures like the type of temperatures that fire provides. This shows they survive through exposing the seeds after forest fires.
Answer:
D
Explanation:
A It allows the lodgepole pine tree to make more seeds in cones that are hard to open. IS WRONG B) It creates more wildfires for the lodgepole pine tree to reproduce. IS WRONG C) It makes the seeds travel and grow in areas where there are no wildfires. DEFINITLY NOT so that leaves it with D It helps the lodgepole pine tree to protect the seeds and to reproduce.
Over a period of several decades ecologists conduct an investigation on the survival of a species of lizards
Answer:
To find out the impact of environment on the physical structure of lizard and natural selection.
Explanation:
Ecologists conduct an investigation on the survival of a species of lizards in order to study the impact of environment on the physical body of lizard and natural selection. The ecologists find out that environment has direct impact on the body structure of lizard. Those lizards that spend more time on the ground, have longer legs in order to run fast, while on the other hand, species that lives in the trees usually have shorter legs in order to easily climb on the trees so these body structure helps them in survival and movement.
30. Which of the following best explains why enzymes are necessary for many cellular reactions?
A. Enzymes supply the oxygen necessary for the reactions.
B. Enzymes change reactants from solid to liquids during the reactions.
C. The reactions take up too much space in the cell if the enzymes are missing.
D. The reactions are too slow to meet the needs of the cell if enzymes are missing.
Answer:
D. The reaction are too slow to meet the needs of the cell if enzymes are missing
hope it helps
How do u use a codon chart?
Substance A is a gas and substance B is a liquid, They are at the same temperature why is one gas and one a liquid
In protein synthesis, how many nitrogenous bases code for a single amino acid?
one
two
three
four
Answer:
C
Explanation:
EDGE 2022
Which of the following is a large artery that pushes oxygenated blood away from the heart to the rest of the
body?
O Pulmonary artery
O Superior Vena cava
Aorta
Pulmonary Vein
how forests can be better managed ?
Select three of the components that were proposed by Darwin for natural selection to occur. Check All That Apply Populations experience differential reproductive success.Populations experience differential reproductive success. Breeding is done intentionally with the intent to increase the frequency of desired traits.Breeding is done intentionally with the intent to increase the frequency of desired traits. Variation within a population is heritable.Variation within a population is heritable. Populations experience competition for resources.Populations experience competition for resources. The variations in a population make no difference in terms of reproductive success.The variations in a population make no difference in terms of reproductive success.
Answer:
.Variation within a population is heritable. Populations experience competition for resources.
Explanation:
Variation exist among individual, and this makes individual unique. Variation in shape,size,color exist in an organism.
Traits or character can be inherited from parents which means it can be transfer from one person or individual to another.
Each organism posses different traits for survival, some traits are presents as to better help some organism adapt to their environment.
How can a person cannot taste PTC I'd both of their parents have the ability to taste PTC?
Answer:
the parents are (Tt) and each passed down the recessive allele so the child is (tt)
Explanation:
Earth science question. Please help
Answer:
answer choice 4, more rain and a steeper slope cause it to flow faster
Explanation:
What is the relationship between the rock cycle and the plate tectonics?
Answer: The metamorphic rocks can erode into sedimentary rocks which can turn into igneous rock. Metamorphic rocks in the rock cycle is driven by tectonic plates.
Explanation:
This is a question that has been confusing - In addition to carbon dioxide, what other two ingredients does a plant need for photosynthesis?
Answer:
Carbon dioxide, water and sunlight
Answer:
water and sunlight
Explanation:
explain how the adaptation to reproduce quickly is beneficial in bacteria's ability to
develop resistance to antibiotics
Answer:
Antibiotics save lives but any time antibiotics are used, they can cause side effects and lead to antibiotic resistance.
Since the 1940s, antibiotics have greatly reduced illness and death from infectious diseases. However, as we use the drugs, germs develop defense strategies against them. This makes the drugs less effective.
I mark Branliest for the correct answer quickly please listen to me Eyes Blue
Answer:
1(i think)
Explanation:
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.
When uncontrolled, the cell cycle becomes cancer. It forms lumps called..?
Answer:
Tumours are groups of abnormal cells that form lumps or growths. They can start in any one of the trillions of cells in our bodies.
Explanation: (:
Answer:
It forms lumps called tumors.
Which of the following is used as biochemical evidence for evolution? *
a. Similarities in bone structures
b. Similarities in DNA
c. Fossil record
d. Similarities in eye function
3 examples of radioactive dating?
Answer:
Uranium 238
Potassium 40
Rubidium 87
Explanation:
Oxygen, Sunlight, and temperature are all examples of what type of limiting factor?
Answer:
Biotic Limiting Factors
These limiting factors can be further broken down into abiotic or biotic limiting factors. Abiotic factors are non-living physical and chemical elements in the ecosystem, such as sunlight, temperature, soil, water, and oxygen