Answer:
Explanation:
there is a positive side and a negitive side to magnets two of the same side of the magnet will repel oppisites will attract
positive+positive=repel
positive+negitive=atract
Answer:
attract: when two magnets will attract, S and N will be facing each other
repel: when two magnets will repel, S and S or N and N will face each other
both: when two magnets will attract and repel, the magnets won't be placed in the same way. N will be facing the middle of both S and N or S will be facing the middle of N and S
Explanation:
this is what i learned i hope it's right if not i didn't say nothing
the dissolution of copper sulphate is
when CuSO4dissolved in water, no chemical reaction takes place since no new substance is getting formed.Thus it is a physical change. The dissolution of Zinc granules in dil. HCl is a chemical change because zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas is liberated. The reaction is : →Zn+2HCl→ZnCl 2+H2 ( all numericals comes down of the no I cant write it down)
Why is fertile soil a valuable resource?
Humus is present in it
It takes a very long time to make it
It is quickly being renewed
There is a large amount of it
Adaptations that help
an
organism survive appear quickly.
A. True
B. False
Answer:
B
Explanation:
Adaptions that help an organism survive appear slowly over time due to the fact that natural selection takes lifetimes to make a big effect.
Explain how a swinging bat has kinetic energy?
Kinetic energy can be found in all bats.
The bat is gaining kinetic energy from the air around it.
Any matter that is moving has kinetic energy.
The bat has stored energy that is now being release.
Answer:
Explanation:
D
Protists are usually ____________ and live in _________ environments.
A.single-celled, dry
B.multi-celled, moist
multi-celled, dry
single-celled, moist
Answer:
The answer is D
Explanation:
Hope that helps
This map shows the movement of the world's tectonic plates. Which plate moves in more than one direction?
Question 4 of 10 What is the difference between science and pseudoscience? O A. Science is done only in a laboratory, while pseudoscience is done in the real world." B. Pseudoscience is based on empirical evidence, while science is based on observation and experimentation. C. Scientific claims are biased, while pseudoscientific claims are unbiased. O D. Scientific claims can be verified through observation and experimentation, while pseudoscientific claims cannot SUBMIT
Explanation:
The difference between science and pseudoscience is that science relies on experimentation and data gathered.
Pseudoscience is based solely on one's opinion rather than fact. in the early 1800's, scientists used to speculate what type of a person you are or intelligence by the shape of your head.
what are the consequences of overdrawal of water?
Answer:
As the water table goes low, water may not be easily obtained leading to it scarcity. Overdrawal of water can also lead to sinking or lowering of the land surface that can make it prone to flooding. Streams and water bodies may also get disconnected due to over-withdrawal of water.
You have a strand of DNA with 5 nucleotides on each side for a total of 10 nucleotides. 4 of the nucleotides are adenine.
pls help
Answer:
According to Chargaff’s rule, the amount of adenine is always equal to that of thymine and the amount of guanine is always equal to that of cytosine. A = T(120), G = C(120) The total number of nucleotides would be 120 × 4 = 480.
Describe the connection between limiting factors and invasive spicies
Answer: factors that limit a population size are limiting factors. Biotic potential is the amount of organisms that could be supported in an ecosystem if plenty of resources were available. Factors that cause a population to increase are 1)births: the number of births in a population in a certain period of time. 2) immigration: when organisms move INTO a population.
Explanation:
some examples of limiting factors are natural hazards, amount of food, amount/quality of water and air, predators deforestation.
Which of the following statements about the ice ages is true? a. An ice age will never come again. b. The causes of ice ages are well known. c. During the ice ages, icy glaciers covered much of the continents. d. There were no living organisms during the ice ages.
Answer:
C
Explanation:
its a fact and in Biology we take facts over expectations
a cell has a 5% salt concentration is placed in a solution with a 15% salt concentration, the cell will
Answer:
Water will move into and out of the cell at the same rate, causing it to remain the same size.
I didn’t mean to put D but what is the answer?!
Answer:
Actually, D is the correct answer
What happens when a molten rock comes in contact with the ocean
Answer:
It freezes
Explanation:
I taken this test
Which wave has a wavelength that is most likely seen as red light? 690 nm O A 580 nm n O B. 490 nm O C. M M m 440 nm m O D. M
Answer:
690?
Explanation: Hopes this helps!
Answer:
690
Explanation:
ape x
The neurotransmitter thought to be involved in learning and memory is:
1) acetylcholine.
2) norepinephrine.
3) glutamate.
4) glycine
5)GABA
Molecular anthropology ___________________ Question 1 options: uses genetic analysis of a DNA sequence to assess evolutionary links. is the specialty of the most important member of an archaeological excavation project. studies early hominins through fossil remains. uses microscopic phytolithic analysis to study molecular evolution. uses archaeological survey techniques to gather its data.
Answer:
The correct answer is ''uses genetic analysis of a DNA sequence to assess evolutionary links.''
Explanation:
Molecular anthropology is a relatively recent branch, it refers to the study of biological phenomena (genetic study) at molecular levels, that is, biochemical, it allows us to understand and expand our knowledge about the evolution of the species and the complex phenomena of microevolution . It is closely related to other fields of anthropological study, among which we can mention primatology and genetics.Through molecular anthropology we are more aware of kinship, therefore, we can know human evolution over the centuries .
a thick black cloth that forms a barrier to weeds and holds down erosion is called ?
Answer:
Landscape fabric, weed barrier and weed barrier fabric are names for the same product. It is a black mesh type of plastic that is used extensively in landscaping to keep weeds out of your garden.
Answer:
landscape fabric
Explanation:
It is a black mesh type of plastic that is used extensively in landscaping to keep weeds out of your garden.
please help what is this term
In guinea pigs, the allele for black fur (B) is dominant over the allele for brown (b) fur. A black guinea pig is crossed with a brown guinea pig, producing five F1 black guinea pigs and six F1 brown guinea pigs. a. How many copies of the black allele (B) will be present in each cell of an F1 black guinea pig at the following stages: G1, G2, metaphase of mitosis, metaphase I of meiosis, metaphase II of meiosis, and after the second cytokinesis following meiosis
Answer:
G1: One copy of the B allele per cellG2: Two copies of the B allele per cellmetaphase of mitosis: Two copies of the B allele per cellmetaphase I of meiosis: Two copies of the B allele per cellmetaphase II of meiosis: One copy of the B allele per cellsecond cytokinesis following meiosis: One copy of the B allele in only two of the four daughter cells.Explanation:
Due to technical problems, you will find the complete explanation in the attached files
Which of the following is true?
a. Blood glucose decreases to normal.
b. Blood glucose increases to normal.
c. Liver breaks down glycogen and releases glucose to the blood.
d. Liver takes up glucose and stores it as glycogen.
e. Pancreas releases glucagon.
f. Body cells take up more glucose.
Answer:
c. Liver breaks down glycogen and releases glucose to the blood.
Explanation:
Living system can be defined as the internal systems found in living organisms and how various materials are circulated inside organisms.
Generally, these living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.
Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.
Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc.
Organs can be defined as specialized body tissues united to perform specific functions in living organisms. Some examples of organs found in humans are brain, bladder, kidney, heart, intestine, eyes, lungs, liver, etc.
A liver refers to a large, essential organ that is reddish-brown in color which is used to synthesize proteins, secrete bile, and the detoxification of metabolites.
Glycogenolysis can be defined as a process which typically involves the breaking down of the primary carbohydrates (glycogen) present in liver into glucose so as to maintain blood glucose rates and provide necessary energy for living organisms.
Hence, the true statement is that liver breaks down glycogen and releases glucose to the blood.
What is the definition for vacuole and Chlorophyll?
Answer:
Some bacteria perform photosynthesis, but their chlorophyll is not relegated to an organelle. Vacuoles. Vacuoles are membrane-bound sacs that function
sorry if it is not right
The lever of gases that surrounds a planet is known as the
Answer:
Gases that surround a planetary body is an atmosphere.
Explanation:
From Greek atmo- vapor, stean, and from Latin sphaera - globe, ball, celestial sphere
refers to the Linnaeus' method of naming species
using a unique two-word name made up of the genus and species name.
O cell organelle
O level of cladistics
O binomial nomenclature
O method of taxonomy
Answer:
binomial nomenclature
Explanation:
Binomial nomenclature as the name implies (binomial = two, nomenclature = naming) is a system of naming organisms that comprises of two unique Latin word names. The binomial nomenclature is a system of naming that was proposed by the man referred to as the FATHER OF TAXONOMY, CAROLUS LINNAEUS.
According to this system of naming organisms, the two names are the generic and specific epithet of the organism respectively. For example, in dog, which is Canis familiaris, Canis is the generic name while familiaris is the specific name.
Dr. Nachman and his colleagues collected rock pocket mice across 35 kilometers of the Arizona Sonoran Desert, which included both dark, rocky lava outcrops and light, rocky, granite areas. They recorded substrate color, and coat-color frequencies for each location. Each site was separated from any of the others by at least eight kilometers. The researchers trapped a total of 275 mice. Their data are summarized below (numbers have been slightly modified for the purposes of this worksheet).
(numbers have been slightly modified for the purposes of this worksheet).
Field Data Summary
Collecting Site Substrate Color Number of Mice Phenotype
Light Dark
1 Dark 22 3 19
2 Light 80 74 6
3 Light 22 19 3
4 Dark 28 3 25
5 Light 58 25 33
6 Dark 65 9 56
1. Calculate the overall frequencies of light-colored mice and dark-colored mice caught on light-colored substrates.
2. Calculate the overall frequencies of light-colored mice and dark-colored mice caught on dark-colored substrates.
3.Using the Hardy-Weinberg equation and data from the table above, determine the frequency of the three genotypes on the light, rocky, granite substrate.
4. Using the Hardy-Weinberg equation and data from the table above, determine the frequency of the three genotypes on the dark, rocky lava substrate.
5. Which fur color seems to have the greatest overall selective advantage?
6.What environmental change gave a selective advantage for one coat color over another?
7. In a separate study, 76 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One collecting site was in Arizona. The other three were in New Mexico. Dr. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. However, the dark-colored mice from the three New Mexico locations were slightly darker than the dark-colored mice from the Arizona population. The entire Mc1r gene was sequenced in all 76 of the mice collected. The mutations responsible for the dark fur color in the Arizona mice were absent from the three different populations of New Mexico mice. No Mc1r mutations were associated with dark fur color in the New Mexico populations. These findings suggest that adaptive dark coloration has occurred at least twice in the rock pocket mouse and that these similar phenotypic changes have different genetic bases. How does this study support the concept that natural selection is not random?
8. To determine if the rock pocket mouse population is evolving, explain why it is necessary to collect fur color frequency data over a period of many years.
Answer:
1)
frequencies of light-colored mice ≅ 0.74frequencies of dark-colored mice ≅ 0.262)
frequencies of light-colored mice ≅ 0.13frequencies of dark-colored mice ≅ 0.873)
q² = 0.74p² = 0.02 2pq = 0.244)
q² = 0.13p² = 0.42pq = 0.465)
The dark-colored fur seems to have the greatest overall selective advantage
6)
Dark lava, that changed the color of the substrate, from light to dark.
7)
Because to produce dark color, animals from the different regions suffered different mutations that drove them to have almost the same dark fur color. All of the animals are inhabiting dark substrate, which means that this environmental condition is favoring the same phenotype.
8)
To see if the mice population is evolving, you need to take a sample of animals per year, through many years, and analyze if it is changing or not. If the population is evolving, you will notice a change in the allelic and genotypic frequencies over the years, favoring one genotype or the other. If the population is not evolving, the frequencies will keep equal through the years, it will not change.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
Which of the following does NOT influence population change?
a. immigration rate
b. birth rate
c. emigration rate
e. death (mortality) rate
f. interest rate
Minerals and rocks have cultural value and both are used in manufacturing and
technologic industries. Minerals and rocks improve the quality of our lives.
True
False
Describe the process that water goes through when it begins as surface water being evaporated to ending as groundwater. - BE DETAILED AND SPECIFIC with this answer.
Answer:
The water goes thru this process by evaporation, then it goes into the clouds, those little droplets get bigger until they get big enough to drop onto the ground, then when the sunlight comes it evaporate into the clouds again.
Biology
1 Explain the Diffrent Between aldose and Ketose monosaccharides
2 List All Liquids And Explain How They Foremd
Answer:
1.Ketose and aldose are monosaccharides which can be differentiated based on the group they contain. An aldose is defined as a monosaccharide whose carbon skeleton has an aldehyde group. ... Ketose is a monosaccharide whose carbon skeleton has a ketone group.
Which of the following is a characteristic of the plasma membrane? It is made up of one layer of phospholipids. It doesn't contain any molecules aside from phospholipids. The outward-facing phospholipid tails give it a rough quality. It allows some molecules to pass through but prevents others from doing so.
Answer:
It allows some molecules to pass through but prevents others from doing so.
Explanation: