Answer:
false.
so·nar
/ˈsōˌnär/
Learn to pronounce
noun
a system for the detection of objects under water and for measuring the water's depth by emitting sound pulses and detecting or measuring their return after being reflected.
"a weak sonar signal"
Answer:
0.3106 seconds
Explanation:
Frequency= 20,000-Hz
The speed of echoes sounds can be calculated using the expression below;
Y= ( 2x/t) ...........................eqn(1)
t= overall time taken
x = maximum depth = 230m
Y= speed of echoes sounds
Speed of sound in water= 1,481 m/s which is a constant with little variation.
If we substitute the given values into eqn(1) we have
1481 = (2× 230)/ t
1481 × t= 460
t=460/1481
t=0.3106 seconds
Hence, the minimum time between pulses (in fresh water) is 0.3106 seconds
What does it mean for a bacteria or protist to be photosynthetic?
O They are responsible for disease growth.
o They are only responsible for the decomposition of compost.
They are a primary producer of biomass in the ocean.
They are multi-cellular organisms.
If a bacteria or protist is photosynthetic that means they are the primary producer of biomass in the ocean.
What are primary producers?Primary producers are organisms that produce their own food through the process of photosynthesis or chemosynthesis. These organisms are the base of the food chain in most ecosystems, as they provide the energy that drives the ecosystem.
Photosynthetic primary producers, such as plants, algae, and some bacteria, use energy from sunlight to convert carbon dioxide and water into glucose, a type of sugar. They release oxygen as a byproduct of this process.
Chemosynthetic primary producers, such as some types of bacteria, use energy from chemical reactions to convert inorganic substances into organic matter. These reactions typically involve the oxidation of sulfur compounds or methane, and they occur in environments where sunlight is not available, such as deep ocean vents and underground coal mines.
Primary producers are important because they provide the energy that drives the food chain and support the rest of the ecosystem. Without primary producers, higher-level consumers, such as herbivores and carnivores, would not have a source of energy.
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how does water cause frost wedging
Answer:
when water gets in crack, freezes, and expands.
Hopefully this is the right answer
if the chloroplasts of a plant cell are damage, which will it be unable to do?
Answer:
Become Green
Explanation:The Organelles that are green will be destoryed causing the plant not to be able to become green
What analysis and data is science based upon
Answer:
Analyzing Scientific Data
Science is all about collecting data. If we look at the definition of science, we can say that science is the study of the natural world through systematic observation and experiment. That observation and experiment is where you collect the data.
Explanation:
why are the offspring of coral identical to the parent
they reproduce sexually so offspring have increased genetic variation
they reproduce asexually so offspring have increased genetic variation
they reproduce sexually so offspring have decreased genetic variation
they reproduce asexually so offspring have decreased genetic variation
Answer:
they reproduce asexually so offspring have decreased genetic variation
Explanation:
when an organism reproduces asexually, its offspring will look identical to the parent due to the offspring only receiving genes from one parent. I hope this helps!
Imagine that the climate in your region became extremely arid, and freshwater became a scarce and precious resource. Wasteful uses of water, such as watering lawns and filling swimming pools, would be strictly outlawed, and water from the municipal water supply would cost 100 times what it does now. Discuss how you would adapt to that situation.
I would adapt to such situation by ensuring that physical activities are
reduced , use of water is adjusted and recycling is maximized.
Water is a n important component of life as we need water for various
activities such as drinking, cooking, washing etc. Scarcity of water can result
to unhygienic conditions and dehydration which could result in death.
it is best to ensure physical activities are reduced to prevent dehydration
through sweating. The wastage of water should be reduced to the barest
minimum through use adjustment and recycling.
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in this investigation the independent (or tested) variable is a. the speed of the rat b. letting the rat 10 times c. adding the rat's favorite treat at the end d. using the same maze
write types of cellular respiration and their function?
Answer:
There are 2 types of cellular respiration i)Aerobic respiration
ii)Anaerobic respiration
Explanation:
i)Aerobic respiration: is the chemical reactions in the cells that use oxygen to break down food molecules to release energy. Its complete oxidation process that releases more energy (2830 $ J). The word equation of aerobic respiration is:-
glucose + oxygen------> carbon dioxide + water + energy.
ii) Anaerobic respiration: is the chemical reactions in cells that break down food to release energy without using oxygen. Its partial (incomplete) oxidation process that release a few energy (188 $ J) The word equation of anaerobic respiration in human muscles:-
glucose-----> lactic acid
The word equation of anaerobic respiration in yeast:-
glucose yeast alcohol + carbon dioxide
------->
What does PONCH stand for?
phosphorus, oxygen, nitrogen, carbon, and hydrogen
phosphate, oxygen, nickel, carbon, and hydroxide
pulmonate, oxygen, sodium, calcium, and helium
phosphate, oxygen, nitrogen, carbonide, and hydrogen
Answer:
PONCH stands for : phosphorus, oxygen, nitrogen, carbon, and hydrogen.
Evaluate the following statement:
The Lock-and-Key Model is analogous to two puzzle pieces fitting together. The
Induced-Fit Model is analogous to a hand slipping into a glove.
a. True
b. False
Answer:
true I know the answer because my teacher told me
Which is a type of mining that is very dangerous but doesn't disrupt much of the surface? A Surface mining B. Strip mining C. Mountaintop removal D. Long wall mining
Answer:
Surface mining.
Explanation:
Surface mining can severely erode the soil or reduce its fertility. It can also pollute waters or drain underground water reserves; scar or altar the landscape; damage roads, homes, and other structures; and destroy wildlife.
4. Which of these is a terrestrial plant? A. green algae B. duckweeds C. white gourd D. Yellow lily 5. Where does a plant with thick stem for storing water probably grow? A. desert B. mountains. C. forest D. ocean 6. Which of these is a function of waxy leaves in a plant? A. roof of the plant C. protects the plant from animals B. absorb nutrients from the soil D. protect the plant from dehydration
PLEASE HELP ME I REALLY NEED THE CORRECT ANSWER RIGHT NOW!!!!
Answer:
first one is the lily
Explanation:
What Is Chemogeny ( Chemical Evolution ) ? And Explain The Steps Of Chemogeny [Both Answer In Simple Word/ Simple Answer Which Is Easy To Concept Or Read]
Answer:
Chemogeny may be a theory of chemical evolution that depends on the chemical reactions and formation of drugs on the bases of chemical reactions. This theory says that “Life occurs as a results of evolution of inorganic matter”.
In the 1920's Scientists Oparin and Haldane, developed this hypothesis of the chemical origin of life from the primitive atmosphere of the world having matter like methane, ammonia and water. there have been very low concentrations of oxygen thanks to the presence of high temperatures like 5000-60000C. So, these conditions weren't suitable for the free existence of organic compounds, so reactions started happening .
Under conditions like high sunlight and warmth , inorganic matter gets converted to inorganic compounds. And this might end in the storage of organic compounds, which gets more and more concentrated with the passage of many years.
These compounds interact with one another and end in “life”.
So, chemogeny is that the process of chemical evolution of earth and formation of life from pre-existing matter with the assistance of chemical reactions.
Explanation:
Hopefully I was able to help you with the concept. Good luck!
Guys how to make my hair tall and healthy
Which type of cell-to-cell junction joins intermediate filaments ( keratins) in one cell to the basal laminate; welding down the cells of the epithelial and providing tensile strength?
A. Right junction
B. Desmosomes
C. Gap junction
D. Hemidesmosome
E. Adherents junction
Answer:
Desmosomes
Explanation:
Desmosomes Connect Intermediate Filaments from Cell to Cell
Through desmosomes, the intermediate filaments of adjacent cells are linked into a net that extends throughout the many cells of a ti
What is carbon?
A. an element
B. a compound
C. an
organism
the empirical (scientific) method of study is based on ______
Answer:
Empirical research is based on observed and measured phenomena and derives knowledge from actual experience rather than from theory or belief.
Key characteristics of empirical research:
- Specific research questions to be answered
- Definition of the population, behavior, or phenomena being studied
- Description of the process used to study this population or phenomena, including selection criteria, controls, and testing instruments (such as surveys).
Which clouds are best associated with a thunderstorm?
o towering funnel clouds
o swirling clouds with a calm center
o high cumulonimbus
What stage of cell respiration is being shown above?
The stage of cell respiration that is being shown above is oxidative phosphorylation. During this stage, the transport of electrons is coupled to the generation of an electrochemical gradient.
Cellular respiration can be defined as a series of metabolic reactions by which aerobic cells generate energy in the form of ATP.
Cellular respiration has three main stages: glycolysis, the Krebs cycle and oxidative phosphorylation.
During oxidative phosphorylation, the transport of electrons across the mitochondrial membrane is coupled to the generation of an electrochemical gradient, which is then used to generate ATP by an ATP synthase as shown in the figure.
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Pls help me with this question!! The question is asked on this image!!
Answer:
With oxygen.
Explanation:
Have a great day!
explain the important of insects
The inheritance of genetic traits from parents to children follows predictable rules. Knowing
that each parent contributes genes equally to each child, what determines an inherited trait
such as eye color?
Did you know that your bum can make three states of matter? Solid, Liquid, ad Gas
Answer:
Nope
Explanation:
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Nope
Give reasons :
a) Nylon clothes should not be worn in the kitchen.
b) Cotton fibre is used to make bath towels.
c) Umbrellas and raincoats are made from synthetic fibres
Answer:
a) It is dangerous to wear nylon clothes while cooking because it is a synthetic cloth and they catch fire easily also they can stick on our body which is very painful.
b) Cotton is a natural product. And unlike synthetic fibres, it is more absorbent. The towel hence has high absorbency.
c) Nylon and polyester are two fabrics most commonly used in raincoats and umbrellas. They are not absorbent the way natural fibers are. They naturally resist waterlogging, and can be made waterproof.
Why are there not many vaccines for fungal & parasite disease as we have for viral and bacterial disease?
Answer:
it is very easy to kill the pathogen by vaccination but it is very difficult to detoxify the toxins produced in the host.
Explanation:
Hopefully this helped!
the individual blades are called a) simple leaf b) compound leaf c)leaflets d) leaf gap
The individual blades are called leaflets. The leaflets are also referred to as
foliole.
The leaflets is referred to as the individual leaf and is usually not attached
directly to the main stem of the plants.
A simple leaf has only one blade while a compound leaf has two or more
blades which are divided into parts which we call leaflets. Leaflets are
usually in groups in plants and can be plucked individually from the
branches of trees.
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rough endoplasmic reticulum what is and function
The general function of the endoplasmic reticulum is to produce protiens for the cell to function. The rough ER in particular has many ribosomes on it's surface, while the smooth ER does not. These ribosomes give the rough ER it's distinct appearence under a microscope, and assist in making protiens.
Lipids are what?
proteins
acids
fats
amino groups
Why is it that dominant diseases are not as common as recessive ones?
Answer:
Mainly because if a disorder is dominant, then it will be manifested by all who have the gene. If the disorder is severe, then it will reduce the chances of the individual surviving to grow up and reproduce (unless the disorder only manifests symptoms in later life). If they do reproduce, then 50% of their offspring will inherit the gene, and be at a similar disadvantage in reproduction. Thus, there is likely to be selection against the gene. By contrast, a recessive disorder is only manifested if both parents pass on the abnormal gene, and an individual with one gene for the disorder is usually at no disadvantage. Thus, there is much less selection against abnormal recessive disorders.
Which feature forms at Earth’s surface from the cooling of lava?
extrusion
fault
intrusion
unconformity
Answer:
The correct answer is Extrusion.
Explanation:
I can confirm that it is 100% correct.
Answer: A
Explanation:
i took the test