Dating methods provide evidence of the age of fossils and the timing of key evolutionary events. Absolute dating techniques give a numerical age, while relative dating techniques provide a relative age. Punctuated equilibrium is a theory of evolution that suggests long periods of little change followed by rapid evolution.
Explanation:Dating methods help to support the theory of natural selection and biological evolution by providing evidence of the age of fossils and the timing of key evolutionary events. Absolute dating techniques, such as radiometric dating, provide an actual numerical age for fossils or rocks. For example, radiocarbon dating can be used to determine the age of organic materials up to about 50,000 years old. Relative dating techniques, such as stratigraphy, provide an understanding of the relative age of fossils or rocks. For example, the law of superposition states that in undisturbed rock layers, the oldest rocks are at the bottom and the youngest are at the top.
Darwin's original ideas on speciation did not involve dating methods, as these methods were not well-developed during his time. Instead, he focused on observational evidence from the natural world to propose his theory of evolution by natural selection.
Punctuated equilibrium is a theory in evolutionary biology that suggests that species may undergo long periods of little or no change, followed by relatively short periods of rapid evolution. This theory was proposed by Stephen Jay Gould and Niles Eldredge in 1972 as an alternative explanation to the gradualistic model of evolution proposed by Charles Darwin.
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Suggest reasons why the information represented in the pyramid of numbers of animals of one of the ecosystems you studied may not truly represent that ecosystem.
Statistically, who is at greatest risk for committing suicide?
a. sue, a 30-year-old japanese american female
b. star, a 35-year-old native american female
c. stuart, a 65-year-old white male
d. bobby, a 14-year-old african american male
d. bobby a 14 year old boy
This change in the gene pool is a result of hybridization. In scientific terms, we could call this a method of
Hello. This question is incomplete. The complete question would be:
"A farmer was growing the peas seen here: round and yellow are dominant traits; green and wrinkled are recessive traits. The farmer's goal was to produce a crop of round, green peas. To do this, she introduced plants that bred true for green seeds (peas). Over time the gene pool was modified and the presence of yellow peas became non-existent. This change in the gene pool is a result of hybridization. In scientific terms, we could call this a method of A) gene flow. B) emigration. C) niche shift. D) genetic drift. "
Answer:
A) Gene Flow
Explanation:
Gene flow is nothing more than the movement of genes from one population to another. This can be seen in the question above, where the farmer introduced a population of plants that had the characteristic he wanted in the existing plant population with the goal of transferring genes from one population to another.
This flow, also called migration, is ensured by the insertion of new genes in a population thanks to the arrival of new individuals. Gene flow therefore ensures that populations are less genetically differentiated.
Gene flow is an important factor related to genetic variability. If an individual from one population migrates to another and inserts his or her gene into the population, if not an existing gene, it provides increased genetic variation.
which two organisms are most closely related, based on the tree above?
A. ray-finned fishes and sharks
B. rodents and primates
C. dinosaurs and crocodiles
D. dinosaurs and birds
Answer:
D. Dinosaurs and birds !!
Explanation:
Hope that helps ya!^^ <3
Final answer:
Dinosaurs and birds are the two organisms that are most closely related.
Explanation:
Based on the information provided, the two organisms that are most closely related are dinosaurs and birds. Birds are considered to be highly modified diapsids and they evolved from theropod dinosaurs. They share a common ancestor and have similar structural characteristics, such as the presence of feathers and a beak.
Plant cells produce oxygen gas ____. by splitting carbon dioxide. by splitting ribulose bisphosphate. by breaking down glucose by splitting molecules of water.
Plant cells produce oxygen gas by splitting molecules of water.
• A kind of chemical reaction in which molecules are dissociated into smaller components by the activity of light is termed photolysis.
• For example, in the process of photosynthesis, the photolysis of water molecule takes place under the activity of light.
• During the process of photolysis, the absorption of photons takes place, which makes hydrogen to combine with an acceptor, and subsequently discharging the molecule of oxygen.
• The molecule of water acts as a substrate for photolysis in the process of photosynthesis, resulting in the formation of diatomic molecule of oxygen.
Thus, plant cells produce oxygen gas by splitting the molecules of water.
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Which compound is inorganic?
A. C6H12O6
B. KH2PO4
C. CH3COOH
D. C2H6
E. C2H5OH
The compound is inorganic B. KH₂PO₄ as it has no carbon but all the organic compounds have the carbon.
What are the four inorganic compounds?The following phase examines the 4 businesses of inorganic compounds crucial to life: water, salts, acids, and bases.
Compound wherein carbon-hydrogen bonds is absent is known as an inorganic compound.
An inorganic compound or greater factors are joined in exact proportions.
They are dissolved in water mythical H₂F is the molecular system of Potassium dihydrogen phosphate.
It is a product of potassium salt and dihydrogen phosphate ions which is likewise called monobasic potassium phosphate.
Potassium dihydrogen phosphate is used as a buffering agent and utilized in fertilizers.
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"if you drink alcohol socially, what helps insure safe driving"
To ensure safe driving while drinking alcohol socially, it's important to not drive if you've had too much to drink. Instead, arrange a designated driver, use public transportation, or a taxi. Being aware of your own limits and drinking responsibly is fundamental.
Explanation:When drinking alcohol socially, it's important to ensure you're practicing safe driving. One way to ensure this is not to drive if you've had too much to drink. Instead, arranging a designated driver, who doesn't indulge in any alcoholic beverages, is a good measure. You may also make use of public transportation or hire a taxi or ride-share service. Drinking responsibly and being aware of your own limits is crucial. Remember, even one drink can impair your driving skills depending on various factors like body weight, food consumption, etc. Moreover, it's not just about your safety, but also about the safety of others on the road.
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where did the rats come from and why did they have a negative effect on the palm trees on Easter Island
Which term refers to the hypothetical brain changes associated with the formation of a long-term memory?
Which approach should the nurse use in sharing this information with jamie and her mother?
What is the importance of the carbon and nitrogen cycles to ecosystems?
They are needed to release the energy stored in food.
They provide materials organisms need to build their bodies.
They ensure that matter only moves within a nonliving environment.
They supply the energy needed for living processes.
The geographical region where flora, fauna and other microorganism resides with each other depending on some factors along with abiotic factors and bio geological cycles is called an ecosystem.
Carbon and nitrogen cycles provide the material organisms need to build their bodies.
What is carbon and nitrogen cycles?The carbon cycle is a biogeochemical cycle that ensures the circulation of the organic and inorganic carbon compounds in the atmosphere and the biosphere.The nitrogen cycle is also the cycle that ensures the flow of nitrogen and its compounds in the layers of the Earth needed for the various processes.The cycle ensures the movement of the compounds and the elements within both the biotic and abiotic factors of the ecosystem.
Therefore, option B is correct.
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Which specific term describes teeth with two ridges, as found in old world-monkey molars?
Teeth with two ridges found in Old World monkey molars are described as 'bilophodont.' This distinctive feature of the molars in Cercopithecoidea aids in processing their omnivorous diet.
Explanation:The specific term that describes teeth with two ridges, as found in Old World monkey molars, is “bilophodont.” This term refers to the most distinctive feature of the molars belonging to the Cercopithecoidea, a group within the Catarrhini which includes Old World monkeys. These molars exhibit two parallel ridges that are adapted for their omnivorous diet, which often includes a variety of fruits and leaves.
Within the Phylum Chordata, specifically among the class Mammalia, Old World monkeys have adapted these bilophodont molars for processing different kinds of foods, efficiently crushing and grinding their food for digestion. Understanding the dental structures of primates like Old World monkeys aids in the study of their dietary habits and evolutionary history.
Select all that apply. What are the main types of resumes you can create?
Answer:
Chronological, Functional, Combination, Infographic, Targeted, Nontraditional, Mini-Resume.
Explanation:
The resume has become an essential document when requesting, for example, work or a scholarship. The resume serves to describe a person's trajectory (their studies and knowledge, and all the data that help to understand their professional experience). One must be careful when drawing up a resume, because this document is the applicant's presentation card and, definitely, it is the first image that one acquires from those who present it to the company or institution to which it is addressed.
The main types of resumes you can write are: Chronological, Functional, Combination, Infographic, Targeted, Nontraditional, Mini-Resume.
Which traits are likely to be different alleles of the same gene? Check all that apply.
thick eyebrows and thin eyebrows
a large nose and an oval face
curly hair and straight hair
blond hair and curly hair
Answer:
The correct answers are option A and C
Explanation:
just took the test :D
Plasmodial slime molds move by A. whipping their flagella. B. streaming along as a mass of cytoplasm. C. infecting a host organism. D. beating their cilia.
Answer: streaming along as a mass of cytoplasm.
Explanation:
Plasmodial slime molds are single cells that are fuse together by 1000 nuclei that are formed by the fusion of several flagellate cells. They form fruiting bodies when there is stimulus. The fruiting bodies help to disperse individual cells when there is favorable condition. They move by ooze to obtain good.
what causes Earth's crust to crumble and fold
The Earth's crust crumbles and folds due to movements and interactions of tectonic plates that exert forces called stress, causing the physical deformation known as strain.
The Earth's crust crumbles and folds mainly due to the movement and interactions of tectonic plates. This process involves significant forces that cause the crust to bend, deform, and sometimes break, leading to the formation of folds and faults. These forces are known as stress, and the resultant physical changes in the crust are referred to as strain.
There are three basic kinds of stress:
Compression: Occurs when rock masses are pushed together, often creating folds in the rock. This typically happens when tectonic plates collide.Tension: Pulls the crust apart, leading to thinning and lengthening of the crust, such as the formation of rift valleys.Shearing: Takes place when plates slide past each other, cutting the crust into parallel blocks and displacing them horizontally.Deep within the Earth, as plates collide, rocks crumple into folds much like when you push on opposite edges of a piece of cloth. These processes not only shape Earth's surface but also result in geological activities like earthquakes and volcanic eruptions.
which conclusion is best supported by Daniels observations and discoveries
Which conclusion is best supported by Daniel’s observations and discoveries? d
Severe acid rain caused by factory emissions can erode the leaves of plants. Which statement best explains why this would harm the plant life? A. Water needed for growth would not be able to be taken up from the soil. B. Insects needed for pollination would not be attracted to the plants. C. Sunlight needed for energy would not be able to be absorbed. D. Nitrogen compounds needed for growth would not be available.
Answer:.
Sunlight needed for energy would not be able to be absorbed.
Explanation:
Answer:
c
Explanation:
what evolutionary feature would distinguish phytoplankton from zooplankton?
The evolutionary feature that would distinguish phytoplankton from zooplankton is: nutrition and cellular structure.
Evolutionary Feature:
Phytoplankton and zooplankton are two distinct groups of plankton that play crucial roles in aquatic ecosystems, and they can be differentiated primarily by their evolutionary features related to nutrition and cellular structure.
Key Evolutionary Features
1) Nutritional Mode
Phytoplankton are autotrophic organisms, meaning they can produce their own food through photosynthesis or chemosynthesis. This ability allows them to convert sunlight or chemical energy into organic matter, making them primary producers in the aquatic food web. They are typically plant-like and include groups such as diatoms, dinoflagellates, and cyanobacteria.
Zooplankton, on the other hand, are heterotrophic, which means they cannot produce their own food and must consume other organisms, primarily phytoplankton. They are considered consumers in the food chain and include a variety of organisms such as crustaceans (like copepods and krill), protozoans, and larval stages of larger animals.
2) Cellular Structure
Phytoplankton possess chlorophyll and other pigments that enable them to capture light energy for photosynthesis. Their cellular structure is similar to that of plants, containing chloroplasts and a rigid cell wall, which can be composed of silica (as in diatoms) or cellulose (as in green algae).
In contrast, zooplankton lack chlorophyll and do not have the cellular structures necessary for photosynthesis. Their cells are typically more complex in terms of mobility and sensory structures, allowing them to navigate through water and respond to environmental stimuli.
What can be concluded about Clades 2 and 4 from this cladogram?
A- clade 2 was derived from clade 4
B- clade 4 is ancestral to class 2
C- clade 4 was derived from clade 2
D- clade 2 is a subset of clade 4
Surface processes that work to break down rock are called which of the following?
a. erosion
b. weathering
c. organic decay
d. filtering
(the answer is b. weathering) ( i only did this because no one had this question right)
Answer: b. weathering
Explanation:
Weathering is a natural process which results in the break down of the rocks into parts, sediments and other materials. The weathering can be caused by physical or chemical agent. The physical agents such as water, warm temperatures, and ice and others causes the physical weathering. The chemical agents like rain water and oxygenated air causes chemical weathering.
Juliet is using a paper towel to clean up a juice spill. The liquid sticks to the paper towel because of _____.
does baby mammals depends on milk to survive
The __________ is responsible for regurgitation of food during rumination.
The correct answer is the reticulum.
Rumination refers to the procedure of rechewing the cud, which facilitates the complete dissociation of the cellulose-rich plant matter. Ruminants refer to a category of herbivorous mammals, they are hoofed, toed mammals that consume food in bulk and digest afterward. For example, sheep, cow, goat, camel, giraffes, and others.
The main characteristic of ruminant mammals is their chambered stomach. The ruminant stomach has four chambers, that is, the reticulum, rumen, abomasum, and omasum. The reticulum refers to the second chamber of the ruminant stomach. It exhibits regular contractions that precede the biphasic ruminal contraction for digestion of food particles.
Which of these shows the level of complexity, from simplest to most complex?
A. organism - organs - organ systems
B. organs - organ systems - organism
C. organ systems - organism - organs
D. organs - organism - organ systems
True or false: polysaccharides, lipids, and other non-protein antigens are called t-independent antigens because they induce antibody responses without t cell help.
a. True
b. False
Why would a signaling pathway need to be regulated?
What is the role of glu 270 and arg 145 in catalysis?
The animals living in the deeper parts of the sea floor, ____
The lowest surface temperature yet measured on any body in the solar system (–200 degrees C) occurs on
Answer:
I agree with the other guy he is correct give him the brainliest