Scientists have detected an asteroid that is 700,000,000 km from Earth. About how many astronomical units is that?
Answer:
4.5 is the answer
Explanation:
I justddid it
. Which of the following are you most likely to need when recovering an escaped cat?
A. Pepper spray
B. Restraint gloves
C. A cat bag
D. A head snare
What two organ systems provide communication in thermoregulation?
a
respiratory and nervous
b
circulatory and integumentary
c
integumentary and muscular
d
nervous and endocrine
Name the two types of vectors.
Two types of vectors are Biological and Mechanical.
Vectors are important agents for cloning in biotechnology. Plasmids and bacteriophages are the two types of vectors.
What are vectors?Vectors are the important tools used in biotechnology for cloning the desired DNA sequence or a segment of gene in a host organisms.
Vectors are ideal for cloning as they are small in size and they have the unique ability of self-replication. Thus, they can efficiently multiply in the body of host.
Vectors also possess restriction enzymes which make them cleave at specific sites and thus it can be ideal for drug selection. Another important feature of vectors is that they do not pose any interference with the DNA of the host.
Yeast cells, bacteriophages and plasmids are the commonly used vectors in genetic engineering. Plasmids are widely used vectors isolated from bacteria. Bacterial artificial chromosomes and Yeast artificial chromosomes are also popularly used vectors for genetic modifications.
Thus, vectors are ideal and important for genetic engineering processes.
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I can't fund this any where in my textbook plz halp
From which graph below would you conclude that velocity decreases directly with time?
IMG_1513.JPG
Answer:
four
Explanation:
Answer:
Its Y
Explanation:
Got it right on study island.
Which of these environmental changes occurs most rapidly?
A.) Forest Succesion
B.) Human Population Growth
C.) Decomposition
D.) Tornado
The environmental change that occurs most rapidly among the options listed is human population growth (Option B).
What are environmental changes?Environmental changes refer to alterations in the natural world caused by a variety of factors, including natural forces and human activities. Environmental changes can be gradual or rapid, short-term or long-term, and can affect both living organisms and non-living things.
While the other options - forest succession, decomposition, and tornado - can occur relatively quickly in their own right, they are typically on a much shorter timescale compared to the exponential growth of human populations.
Human population growth has the potential to lead to significant environmental impacts, such as increased resource consumption, habitat destruction, and pollution, among others.
Therefore, it is essential to manage human population growth in a sustainable way to ensure the long-term health and wellbeing of both humans and the planet.
Environmental changes can have significant consequences for both human populations and natural ecosystems. They can lead to the extinction of species, increased frequency and severity of natural disasters, changes in weather patterns, loss of biodiversity, and disruptions to food and water supplies.
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Archeologists have unearthed the tombs of thousands of workers. The author suggests that these tombs belonged to the workers who built the pyramids. What reasoning does she use to support this claim?
In addition to the tombs, archeologists have also discovered a large number of bakery sites near the Great Pyramid. In fact, there are enough bakeries to provide food for thousands of workers, which is how many it would take to construct the Great Pyramid.
In the darkness of the deep ocean, some organisms produce light through a process called ___________________
Answer: Bioluminescence.
Explanation:
Bioluminescence is the phenomena of production of light by living organisms.
This phenomenon is very common in deep sea oceans because at the depth of the ocean it is very dark and it helps the organisms to survive in the following ways :
1. It helps to attract prey.
2. It helps to confuse the predator.
3. To camouflage.
4. For communication.
5. To generate warning signals.
6. For illuminating the water column.
Ciliates have complex internal structures involved in different functional systems. Which organelles aid in their digestion process?
The Green Revolution occurred during the
1960s
nineteenth century
1980s
Middle Ages
if one centromere on each chromosome is needed for proper cell division, what would you expect to happen to cells that have the products with 2 centromere
How is the production of mercury from burning coal an environmental hazard?
Answer:
b
Explanation:
on edge
how to determine if a specimen is living or non-living
describe dwarf planets and their orbits in the solar system
Is rice a living thing or a non living thing? Please explain
Answer:
Living thing
Explanation:
Rice is the seeds of the plants whose scientific name is 'Oryza sativa' and is one of the annual crops. This crop can carry out the cellular respiration process that allows to utilize its nutrients and the cells are able to use it for energy. It also undergoes photosynthesis due to the presence of sunlight and the availability of carbon dioxide and water. It is the most consumed food in various countries.
So, rice can be considered to be a living thing.
How do surface currents help regulate the temperature of the planet?
What forms of energy are being transferred during the water cycle?
please help
Wind, friction, and the Coriolis effect combine to move water in which direction?
A. against the wind
B. perpendicular to the wind
C. in no particular direction
D. parallel to the wind
Wind, friction, and the Coriolis effect combine to move water in a direction that is perpendicular to the wind due to the Coriolis effect and the Earth's rotation.
Explanation:Wind, friction, and the Coriolis effect combine to move water in a specific direction. The correct answer to this question is B. Perpendicular to the wind. This is due to the Coriolis effect, which makes moving objects veer to the side because of the Earth's rotation. The combination of the wind (which pushes the water), the Coriolis effect (which turns the water to the side), and friction (which slows the water) creates a net movement of the water perpendicular to the wind's direction.
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When does hurricane season start
Hurricane season in the Atlantic Ocean starts on June 1st and ends on November 30th.
Explanation:Hurricane season starts on June 1st and ends on November 30th in the Atlantic Ocean. This is the period when conditions are most favorable for the development of hurricanes due to warm sea surface temperatures. However, it's important to note that hurricanes can occur outside of this designated season, although it is less common.
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Suppose scientists decided to harvest the mineral nodules on the sea floor. Identify two environmental problems that might occur if the nodules are harvested.
Answer:
Disturbance to deep sea bed and biodiversity
Explanation:
Harvesting of mineral nodules on the sea floor is done by deep sea mining.
The adverse impacts of deep sea mining are as follows -
Degradation of habitat of ocean species living at the sea bed.
Degradation of habitat causes extinction of species
Noise pollution under the sea
Plumes of suspended sediments
Disturbance in the ecosystem
Why is potassium iodide electrically neutral?
A checkpoint in the cell cycle has broken down. Which of the following results is possible?
Any of these results is possible.
The cell may contain damaged DNA and continue on to be reproduced with that DNA.
The cell may continue to the M phase without having sufficient nutrients.
The cell may not be large enough and contain enough cytoplasm to divide in the M phase.
If a checkpoint in the cell cycle has broken down, the possible results are as follows:
The cell may contain damaged DNA and continue on to be reproduced with that DNA.The cell may continue to the M phase without having sufficient nutrients.The cell may not be large enough and contain enough cytoplasm to divide in the M phase.Thus, any of these results are possible.
What is the Cell cycle?The cell cycle may be defined as the entire sequence of events that are happening from the end of one nuclear division to the beginning of the next. The complete cell cycle is divided into two major stages. They are as follows:
Interphase.M-phase (Division phase).The checkpoints of the cell cycle are surveillance mechanisms that monitor or regulate the order, integrity, and fidelity of the major events of the cell cycle. These include growth to the appropriate cell size, the replication and integrity of the chromosomes, and their accurate segregation at mitosis.
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Look at the prey's population size at the end of the graph. How will this population size most likely change next? A. The population will shrink in size. B. The population will increase in size. C. There is no way to predict how the population size will change. D. The population size will remain the same.
b- increase in size // study island
The population will increase in size. Therefore, the correct option is option B among all the given options.
What is population?In human biology, population refers to the total population of a region (such as a nation or the entire world), which is always changing due to both gains and losses (such as births and immigrations). The availability of food, the impact of diseases, and various other environmental conditions all have an impact on the size of the human population, just like they do for any other biological species.
Social norms governing reproduction and technological advancements, particularly in medicine & public health, which have decreased mortality and increased life expectancy, have an additional impact on human populations. The population will increase in size.
Therefore, the correct option is option B.
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Which of these is a characteristic of index fossils? Found in the topmost rock layer Found in many layers of the same rock Have already established relative age Are limited to a particular geographic location
The index fossils have already established relative age. It is for that reason they can be used to estimate the age.
An index fossil is a fossil that spans a particular geologic time and/or given environment.
These types of fossils (index fossils) can be any type of preserved remains of an organism that lived on the Earth (e.g., an animal or plant).
For example, Ammonites are used as index fossils because they live only during the Mesozoic period (approx 245-65 mya).
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Index fossils are used to determine relative age and have specific characteristics such as wide geographic distribution and rapid evolutionary change.
Explanation:An index fossil is a fossil that is used to determine the relative age of rock layers and the fossils within them. It is characterized by having a wide geographic distribution, being present for a short period of time, and undergoing rapid evolutionary change. Index fossils are found in many layers of the same rock, helping to establish relative age. They are not limited to a particular geographic location, as they can be found in different areas around the world.
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which process is related to crossing over and non-disjunction, mitosis or meiosis? please explain your answer quickly please and thank you.
What should the detective do to get enough DNA? A) western blot B) DNA fingerprint C) gel electrophoresis D) polymerase chain reaction (PCR)What should the detective do to get enough DNA? A) western blot B) DNA fingerprint C) gel electrophoresis D) polymerase chain reaction (PCR)
Answer:
on usatestprep the answer D
Four locations on Earth receive sunlight at different angles. At which of the following angles will the intensity of sunlight received be the least?
90°
75°
50°
25°
The answer is 25 degree, because when the sun is directly overhead, its rays strike the earth at a 90 degree angle. The closer to 90 degrees the rays are, the more concentrated they are and the greater is the heat they produce on the earth's surface. The solar heat reach the surface of the earth becomes less intense as the angles of the rays decreases.
Answer:
D. 25
Explanation:
To be an effective solvent in living systems, a substance must be able to meet all BUT ONE of the following requirements, namely
A) remains liquid over a wide temperature range.
B) form a solution with lipid molecules.
C) able to dissolve a great variety of chemical compounds.
D) provide a safety against extremes in temperature by having a high heat capacity.
Answer:
B. form a solution with lipid molecules.
Explanation:
To be an effective solvent in living systems, a substance must be able to all BUT one of the following. That is form a solution with lipid molecules. Because water does not combine readily with lipids, lipids are able to form barriers, like cell membranes, within the living system called the cell.
Generally, how many populations can fill a niche in a particular community?
A. Only one
B. Only a few
C. Several
D. A lot
Answer: Option A; Only one
Explanation: Niche is space where the organism has a functional role. In a niche, only one species can exist, this is because if there are two species, there will be competition between them. In such a case, the species which will dominate, it will affect the survival of the other weaker one. This way, only one species will exist.