where do convection currents occur
need help fast
Answer:
Convection currents occur in the Earth's mantle.
Answer:
in the mantle of the earth
Explanation:
what type of symbiosis is a lizard living in a tree?
Answer: Commensalism
Explanation: The tree is neither helped no harmed
Choose whether each statement describes an epiphyte or a hydroponic plant. Select the options in the table.
epiphyte plants
hydroponic plants
receives nutrients from air and water
mineral and nutrient solution is in water
grows on other plants
known as air plants
plants grown with water but without soil
Answer:
b and. c. ho0e i helpefxa
Describe the effect on an enzyme of an increase in environmental temperature above the optimum temperature range of the enzyme.
Answer:
In an environmental temperature above optimum temperature will cause the enyzmes to denature (deform), because when they denature the subtrate will no longer fit into the enzyme
The effect on an enzyme of an increase in environmental temperature above the optimum temperature range of the enzyme - denature the enzyme and lose the specific shape of the enzyme leads to losing its activity.
An enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being altered in the process
Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction.extremely high temperatures above the optimum temperature can cause an enzyme to lose its shape (denature) and stop workingThus, the effect on an enzyme of an increase in environmental temperature above the optimum temperature range of the enzyme - denature the enzyme and lose the specific shape of the enzyme leads to losing its activity.
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Which of the following is true about the mitochondrion of a cell?
It has only one membrane.
It has no membrane.
It is circular.
It is where cellular respiration occurs.
Answer: it is where cellular respiration occurs
Explanation:
Some liquid is collected from the xylem of plant stem whats is the substance that present in this collected liquids?
Answer:
mineral ions present in the liquid collection such as Mg2+ which is to be carried to the leaf of the plant essentially for chlorosis
Which layer of rock is the oldest?
1. Layer A
2. Layer D
3. They are all the same age
4. There is not enough information to answer this question
natural selection is an example of a mechanism of evolution. does this mechanism produce a change in individuals or population? explain
Natural selection refers to the procedure where the species better amended to their surrounding appear to survive and generate more offspring. Natural selection refers to one of the mechanisms that make modifications in the frequencies of genes in populations and thus, it is the mechanism of evolutionary change.
However, the phenomenon of genetic drift and natural selection cannot take place unless and until there is a genetic variation, that is unless some individuals are genetically distinct from others.
what is the reproductive organ of ferns
A. Cone
B. Stem
C. Fronds
D. Flowers
Answer:
Stems are the reproduction organ of ferns I think.
Explain the effect of the different SA:Vol ratios on the rate of osmosis into the potato.
WILL MARK BRAINLIEST ANSWER
Answer:
a larger surface area will mean quicker osmosis
Answer:
a larger surface area will mean quicker osmosis
Explanation:
here is a larger area meaning a larger difference in concentration
hope this helped
A hurricane passes through the Gulf of Mexico and destroys many of the coastal regions of Northwest Florida,
Which of the following is a likely impact of this catastrophic event on biodiversity?
Species brought in by the storm surge will displace species native to the coastal wetlands.
Species reliant on coastal wetlands for survival may experience a decline in population due to loss of
habitat.
Coastal wetlands will grow exponentially with the input of nutrients from storm upwelling and biodiversity
will increase in these areas.
Excessive salt from the storm surge will flood coastal wetlands and raise salinity to intolerant levels for the
local species, causing a decrease in biodiversity
Answer:
Species reliant on coastal wetlands for survival may experience a decline in population due to loss of
habitat.
Explanation:quizlet said so
PLEASE HELP :)
Based on the data in the table in part C, what effect does decreasing the temperature from 4°C to 0°C have on the sample’s density?
Answer:
As the temperature of the water decreases from 4°C to 0°C, the density decreases slightly.
Explanation:
platos answer.
Help
Did you know that you can't just put "help" as your question?
Why would scientists use a spectrometer in space?
A. To maintain a constant air supply on board a space shuttle
B. To convert light from stars into usable energy for humans
C. To detect the birth and death of distant stars and galaxies
D. To study the chemical composition of the surface of a planet
Answer:
B. A spectrometer measures the wavelength and frequency of light, and allows us to identify and analyse the atoms in a sample we place within it.
Explanation:
Answer:
D. To study the chemical composition of the surface of a planet
Explanation:
took the test
Which activity contributes to an increase in the concentration of greenhouse
gases in the atmosphere?
Answer:
D. Deforestation
Explanation:
Loss of forests contributes as much as 30 percent of global greenhouse-gas emissions each year--rivaling emissions from the global transportation sector.Hopes this helps. :)
Answer:
D
Explanation:
Just took the quiz
Which three observations provides evidence of a cold air mass is moving towards a warm moist air mass over a city? ASAP 20 points!!!!!
Helium has an atomic number of 2. Is the model of the helium atom above is
showing an ion? Explain why or why not.
Answer:
Yes, the model of the helium atom is showing an ion.
Explanation:
Helium, with an atomic number of 2, should have 2 protons and 2 electrons; however, the model only depicts 1 electron. That means the helium must have lost an electron, making it a +1 charge and an ion.
proteins regulate cell process, transport substances into or out of cells, and help
a. regulate blood pressure
b. form bones and muscles
c. control body temperature
d. regulate pH in various parts of the body
Answer:
B
Explanation:
I think it's B since proteins don't control blood pressure or temperature. Also I'm pretty sure they don't regulate the body's PH
all living things are classified into kingdoms based on specific characteristics. which of the following are only characteristics to the bacteria domain
Answer:
Eukaryotic cell, cell wall made of cellulose present
Explanation:
took the test
The main characteristics of the bacteria domain is that they lack a well-defined nucleus and are known as prokaryotes.
What is the main characteristic of the bacteria domain?All living things are classified into kingdoms based on specific characteristics found in organisms in that kingdom.
For the bacteria kingdom, the main characteristic present is that they lack a well defined nucleus as well as nuclear membrane.
Organisms without a well-defined nucleus are known as prokaryoytes.
Thus, the main characteristics of the bacteria domain is that they lack a well-defined nucleus and are known as prokaryotes.
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PLZ HELP ME !!!!!!!!!!!!!!!!1
Answer:
Anaphase
Explanation:
Because it shows separation of chromosomes which occur in anaphse
PLS HELP QUICK
why is endosymbiotic theory not a law in science?
The outermost layer of the Earth that contains the continents and the oceans. a) mante od outer core b) crust d) inner core
Answer:
B.) crust
Explanation:
The ocean floor and continents are all part of the crust. This outermost layer has a thickness of approximately 5-50 km and is divided into 2 parts: continental crust and oceanic crust, corresponding to the continents and oceans, respectively.
There is ice in an ice cube tray. At what temperature did the water freeze? A.0°F c.32°C b. 0°C
Answer:
the ice froze at 0 celcius!
Explanation:
3. What methods are you using to test this hypothesis? Outline the steps of the procedure in full sentences.
Answer:
1. Specify the Null Hypothesis.
2. Specify the Alternative Hypothesis.
3. Set the Significance Level
4. Calculate the Test Statistic and Corresponding P-Value.
5. Drawing a Conclusion.
Explanation:
:)
Answer:
1. Specify the Null Hypothesis.
2. Specify the Alternative Hypothesis.
3. Set the Significance Level
4. Calculate the Test Statistic and Corresponding P-Value.
5. Drawing a Conclusion.
Explanation:
got 100%
Name four RNA viruses that jumped from animals to humans.
Explanation:
SARS, Ebola, swine flu, rabies
Explain how different forms of a gene are distributed to
offspring.
Answer: During gamete formation, the alleles for each gene segregate from each other, so that each gamete carries only one allele for each gene. an individual gene may code for a specific physical trait, that gene can exist in different forms, or alleles.
What are genes?
Genes are an basic physical and functional unit of heredity.Genes are what make our DNA.
Hope this helps
-Tobie the dog
which elemet are metal
Answer:
ELEMENT
Neptunium
Plutonium
Americium
Curium
By definition, a metal element is an element that form positive ions and has metallic bonds. Most elements on the periodic table are metals. Examples of metal elements include iron, copper, silver, mercury, lead, aluminum, gold, platinum, zinc, nickel and tin
What does tainted mean?
A. colorful
B. contaminated
C. extinct
Answer:
Its B-Contaminated hope this helped in any way!!! have a nice day!!
Explanation:
how many chromosomes does a human cell hold
Answer:
Humans have pair of 23 pairs of chromosomes in total is 46 so 46 is your answer
50 points! b)separates sections of DNA by size in order to isolate specific genes. (1 point)
Gel electrophoresis is a technique used to separate DNA fragments according to their size. This is from Khan academy so I believe it is reliable.