Suppose you have two minerals. One mineral fractures into rough pieces, and a second mineral breaks into pieces with smooth surfaces.
What does this indicate?
A.
The second mineral is older than the first mineral.
B.
The second mineral is harder than the first mineral.
C.
The two minerals have a different arrangement of their atoms.
D.
Only the second mineral has crystalline structure
Please help me
Final answer:
The fact that one mineral fractures into rough pieces while another breaks into pieces with smooth surfaces indicates that the two minerals have different arrangements of their atoms.
Explanation:
When it comes to the properties of minerals, how they break or fracture can tell us a lot about their internal structure. If one mineral fractures into rough pieces and another breaks into pieces with smooth surfaces, this indicates that the two minerals have a different arrangement of their atoms (Option C).
This is because the atomic structure determines the strength and orientation of the bonds within the mineral, which in turn influences how it breaks. The atomic arrangement can cause certain minerals to have flat surfaces known as cleavage planes or irregular, jagged surfaces when they fracture. The appearance of the fracture is influenced by the internal crystalline structure of the mineral, but not necessarily its age (Option A), hardness (Option B), or whether it has a crystalline structure (Option D), as all minerals are crystalline to some extent.
What is the largest natural population of organisms that can interbreed to produce fertile offspring?
A) Class
B) Family
C) Genus
D) Species
Answer:
The answer is D) Species
How do reflexes protect the body from injury
what are the characteristics of endocytosis and exocytosis
Final answer:
Endocytosis is the process of capturing substances from outside the cell and bringing them into the cell, with three main types: phagocytosis, pinocytosis, and receptor-mediated endocytosis. Exocytosis is the process of releasing vesicle contents outside the cell.
Explanation:
Endocytosis is the process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane and bringing it into the cell. There are three main types of endocytosis:
Phagocytosis: targets large structures like bacteria or food particles.Pinocytosis: non-specific and captures extracellular fluids or solutes.Receptor-mediated endocytosis: specific for substances recognized by cell-surface receptors.Exocytosis, on the other hand, is the process in which vesicles fuse with the plasma membrane, releasing their contents to the outside of the cell. It is typically involved in the secretion of large molecules like proteins and glycoproteins
what is the astronomical unit based on
Answer:
The astronomical unit (AU) is a unit of length that is based on the average distance between the Earth and the Sun. One AU is equal to 149,597,870.7 kilometers (92,955,807.3 miles).
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What effect does a keystone predator have on its habitat?
a. It increases plant populations.
b. It increases niche diversity.
c. It kills off herbivore populations.
d. It destroys the habitat.
Answer: The correct answer is- b. It increases niche diversity.
A keystone predator is a species, which has profound impact on its ecosystem that is it can control the population and distribution of large number organisms within its habitat.
In other words, its influences the ecosystem as it increases the niche diversity.
For instance, keystone predator such as starfish feeds on the mussel Mytilus californianus and maintains the diversity of species in that communities. As other species will get proper food resources to survive.
Thus, it increases niche diversity.
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Multicellular organisms have five levels of organization ranging from simplest to most complex. The simplest level is the cellular level. This is an image of one type of cell found in your body: a cheek cell. You are the most complex level: you are an organism. List the five levels of the organization, from simplest to most complex. Describe each level of one or two sentences. Give an example at each level.
Explanation:
Each individual is a member of a population. Each population is made up of a group of individuals of the same species that occupy the same environment and interact with each other. Many different populations together make up a community, and many different communities interact with one another in an ecosystem.
Which of the following is not a type of galaxy?
Answer:
There are three main types of galaxies: Elliptical, Spiral, and Irregular. Two of these three types are further divided and classified into a system that is now known the tuning fork diagram. When Hubble first created this diagram, he believed that this was an evolutionary sequence as well as a classification.
Explanation:
how do the nutrients that enter our cells compare with the food we eat
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A __________ is the basic unit of structure and function in living organisms.
cell
tissue
molecule
nucleus
Describe two different forms of electromagnetic waves and explain their uses in technology
As scientists research, they often find information that does not fit with current theories. What happens when new, contradictory information is found?
Final answer:
When scientists encounter evidence that contradicts current theories, they must either revise the theories or develop new ones. This can result in minor adjustments or significant paradigm shifts as seen with quantum mechanics or genetics. Science thus remains a robust, self-correcting mechanism for understanding the natural world.
Explanation:
Science is a continually evolving discipline that thrives on refinement and occasionally requires significant changes to its core theories. When scientists encounter new data that contradicts existing theories, it leads to a process of investigation and assessment. New data might result in the rejection, revision, or development of new theories if they repeatedly disprove or fail to explain certain phenomena or experimental outcomes. Theories must generate testable and falsifiable hypotheses, and when they no longer align with observed evidence, they are subject to change. Planetary formation models provide an example of this, where new discoveries of planetary systems unlike our own prompted revisiting and adjusting the standard models.
When conflicting evidence arises, scientists may engage in a cycle of hypothesis reformulation, experimentation, and debate until a consensus is achieved. In some instances, this can lead to a paradigm shift, a term coined by Thomas Kuhn, signaling a radical overhaul of foundational scientific ideas. Examples of paradigm shifts include the advancement from the indivisible atom concept to the understanding of subatomic particles, or the revisions to Mendel's laws of inheritance with the modern understanding of genetics. However, such shifts happen incrementally as scientists build on existing knowledge.
The scientific method is designed to accommodate new information, maintaining science as a self-correcting pathway to understanding the natural world. Scientists prioritize hypotheses based on their ability to explain data succinctly, predictively, and coherently. It is an ongoing, dynamic conversation between theory and data.
Explain why volcanic soil (andisol) is fertile.
Volcanic soil is fertile because it contains high amounts of minerals and nutrients. It is fertile because it is fresh and new.
Volcanic soil is fertile because it contains high amounts of minerals and nutrients. It is fertile because it is fresh and new.
What is volcanic soil?When volcanoes are active, soil that has formed there frequently has unique chemical characteristics. Due to the presence of volcanic ash, they frequently contain high levels of nutrients and have good water retention.
Depending on the type of volcano from which they are derived, these soils are known as andisols and are frequently quite young and acidic. If there isn't another eruption, volcanic soils near the equator can weather quite well and lose part of their nutrients. These substances can have extremely dark hues.
Volcanic eruptions are frequently dramatic occurrences that draw attention, occasionally on a worldwide scale. We are frequently drawn to volcanic landscapes out of curiosity and wonder to witness the amazing power of nature firsthand.
Therefore, Volcanic soil is fertile because it contains high amounts of minerals and nutrients. It is fertile because it is fresh and new.
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Why are mushrooms important to the food chain?
When do rocks undergo a chemical change?
As we see an increase in habitat alterations, some fish exhibit behavioral adaptations that help with the survival of their young. All BUT ONE is a behavioral adaptation you might see in a freshwater fish species in Georgia. That is:
A) The male and female shiners will swim along the crevice of large rocks and deposit eggs and sperm in the crevice.
B) Male and female catfish exhibit parental care, which includes nest site preparation, fanning of the eggs with their fins, and guarding of the eggs and larvae.
C) The male bluehead chub constructs a gravel mound for spawning. Several other minnow species, known as nest associates, will also use the chub's nest for spawning.
D) Stonerollers are sometimes referred to as creek cows because of their behavior of grazing on algae that helps to transfer large amounts of energy through a food chain.
The correct option is D) Stonerollers are sometimes referred to as creek cows because of their behavior of grazing on algae that helps to transfer large amounts of energy through a food chain.
Stonerollers grazing on algae is a behavior that benefits the ecosystem by controlling algae growth and facilitating energy transfer through the food chain. However, this behavior is not directly related to increasing the survival rate of their young. It is an ecological service rather than a reproductive strategy.
The other incorrect options are
A) The male and female shiners swimming along the crevice of large rocks and depositing eggs and sperm in the crevice is a behavioral adaptation to protect their eggs from predators by hiding them in a secure location.
B) Male and female catfish exhibiting parental care, which includes nest site preparation, fanning of the eggs with their fins, and guarding of the eggs and larvae, is a direct behavioral adaptation to increase the survival rate of their offspring by providing a safe environment and oxygenation for the developing eggs.
C) The male bluehead chub constructing a gravel mound for spawning, which is also used by other minnow species, is a behavioral adaptation that provides a structured environment for the eggs to develop, potentially offering protection and optimal conditions for hatching.
lactase is an enzyme found in the digestive tract that digests lactose a common carbohydate found in milk.Would the genes for lactase be turned on or off after eating cheese and why?
Why body system is dependent on a constant supply of iron, and what deficiency is caused when this mineral is lacking?
Answer:
For erythropoesis/ RBC production, anaemia
Explanation:
Our body needs a constant supply of blood. The blood contains haemoglobin which is a respiratory pigment and a conjugated protein. It contains iron and globin protein. This iron-containing pigment supplies more oxygen to the tissues and gives red colour to the blood. The deficiency of iron or this haemoglobin pigment in the blood leads to anaemia. The iron pigment or haem pigment of haemoglobin increases the carrying capacity of oxygen. Our body tissue needs oxygen for metabolism.We get iron from foods and these irons play an important role in RBC production in the bone marrow.
Which structure produces a substance that aids in the mechanical breakdown of fats
Chemical vacuoles is a structure produces a substance that aids in the mechanical breakdown of fats.
What is Vacuoles?Animal, plant, bacterial, protist, and fungal cells all include vacuoles. It has the size of a giant sac and is one of the biggest organelles found in cells.
Vacuoles are bordered by a thin membrane and filled with fluid and any molecules they take in. This is their basic structure. Because both are membrane-bound sacs, they resemble another organelle called vesicles, however vacuoles are substantially bigger than vesicles and are created when numerous vesicles fuse together.
The primary purpose of vacuoles is to store various materials and molecules; in a sense, they serve as the cell's storage facility.
Therefore, Chemical vacuoles is a structure produces a substance that aids in the mechanical breakdown of fats.
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Write a sentence that relates the terms photosynthesis and respiration .
Final answer:
Photosynthesis and cellular respiration are interconnected in a cycle where the end products of one process become the starting materials for the other, thus sustaining life on Earth by recycling oxygen and carbon dioxide and transferring energy.
Explanation:
Photosynthesis and cellular respiration are interdependent processes that sustain life. A sentence that relates the terms could be: Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen, while respiration is the process where cells use oxygen to convert glucose into energy, carbon dioxide, and water, thus maintaining the balance of gases and energy in the ecosystem.
Both processes involve the transfer of energy and the cycling of key components like oxygen and carbon dioxide. They can be viewed as opposite parts of a cycle that keeps the levels of oxygen and carbon dioxide stable in the Earth's atmosphere. The cycle works because the products of photosynthesis (oxygen and glucose) are the reactants needed for respiration, and vice versa.
In two or more complete sentences, explain how to calculate the orbital period of Neptune, and then calculate it.
mitosis is an important process for a multicellular organisms-
A-metabolism
B-defense
C-growth
D-adaptation
What type of energy is produced by a geyser?
Which phrase describes an abiotic factor?
A.
amount of oxygen in the water
B.
number of available mates
C.
types of birds in a forest
D.
amount of fungi on a dead tree
The phrase that best describes an abiotic factor is as follows: amount of oxygen in the water.
ABIOTIC FACTOR:
In an ecosystem, two major components are in interaction with one another. These two components are the biotic and abiotic components. The biotic factor refers to the living part of an ecosystem i.e. part of the ecosystem that posseses life e.g. animals, microbes, plants etc. The abiotic factor, on the other hand, refers to the non-living components of an ecosystem. For example, air, temperature, humidity, land, oxygen etc. Therefore, a phrase that best describes an abiotic factor is as follows: amount of oxygen in the water.Learn more at: https://brainly.com/question/16271077?referrer=searchResults
some organisms use chemosynthesis to survive. where do they get their energy for this process
Answer: The substances such as hydrogen sulfide and ammonia are oxidized to obtain energy in the presence or absence of oxygen.
Explanation: Many organisms that live in the darker regions of the ocean use this technique to derive energy as sunlight cannot reach there to perform the process of photosynthesis.
The energy obtained by this process is used provide energy to the organism which is used for sustaining life in the deep down ocean.
Why are hydrocarbons not soluble in water
How many levels of biological classification are represented in the taxonomic biological name for an organism?
Answer:
2
Explanation:2
The beavers,fish,and birds that live in a pond are examples of ______
What is the difference between acid rain and acid deposition ???
a. there is no difference between the two terms.
b. acid rain is a border term that applies to many forms of acidity.
c. acid rain is a form of acid deposition.
d.acid deposition only applies to non-liquid forms of acidity.