How is secondary succession different from primary succession?
Select one:
Secondary succession occurs after a disturbance in an area that was
previously uninhabited.
Secondary succession occurs when animals are introduced to an area that
had only plants.
Secondary succession occurs after a disturbance in an area in which the soil
has remained intact.
Secondary succession occurs over a longer period of time than primary
succession.
Answer:
Secondary succession occurs after a disturbance in an area in which the soil
has remained intact.
Urgent!! Will give brainlist to best answer!!
The top ten most commonly eaten foods mostly include grains and other starchy plants.
True
False
Answer:
true
Explanation:
Carbohydrates can be divided into three main categories: sugar, fiber and starch.
Starches are the most commonly consumed type of carb, and an important source of energy for many people. Cereal grains and root vegetables are common sources.
Which conclusion can you draw from the information shown in the graph?
A. Carbon dioxide levels are currently much lower than normal.
B. Carbon dioxide levels are currently higher than they have ever
been.
C. Carbon dioxide levels in the past have been as high as they are
now.
D. Carbon dioxide levels are always about the same.
Answer:
The answer is B. Here is proof. Plz mark brainliest
Explanation:
A gene has 2 alleles, R & B, List the possible genotypes? I also need help with questions 5, 6, 7 and 8 please help! Pls look at the picture! I will mark whoever sounds best the brain! Ty!
Answer:
5.) The possible genotypes should be: RR RB BB ( if the could for the same proteins)
6.) Frequency of R: 0.5
7.)Frequency of R: 0.5
8.)Frequency of R: 0.375
Explanation:
5.) If R and B code for the different forms of the same protein then they are only a few possible out comes
6.) First calculate the total alleles in population
allele R= 40
Allele B=40
total allele = R+B= 40+40
=80
Now to find allele R frequency is:
(Total R alleles) / (Total allele in pop)
40/80=
0.5
7.)Calculate the total alleles
Alleles from for R
RR= 10
R=10x 2= 20
Multiply the value by 2 because there are 2 R alleles present in
RB=20
R=20
Number doesn't change there is only 1 R allele
Total R=20+20
=40
Alleles For B
BB=10
B=10×2
=20
Same thing here, two B alleles together so multiple by 2
RB=20
B=20
Total B= 20+20
=40
Total alleles in pop add
40+40
=80
Frequency of R
Total of R/Total Alleles
=40/80
=0.5
8.)Repeat the same thing in 7 but use different numbers
RR=10
R=10x2
=20
RB=10
R=10
Total R= 20+10
=30
Which of these protects water that is
between the United States and Canada?
A. Endangered Species Act
B. Superfund Act
C. Convention on the Protection/Use of Transboundary
Watercourses
D. London Convention on the Prevention of Marine
Pollution
Answer:
C. Convention on the Protection/Use of Transboundary
Watercourses
Explanation:
Please anyone help please please help ASAP ASAP please
Answer:
radiant to electrical
Explanation:
Chandra X-ray observatory has reported that they have found a new star near our solar system. The Chandra X-ray telescope detects x-rays in space. What does the use of the x-ray telescope review about the newly found star? ( PLS EXPLAIN Y THE ANSWER IS CORRECT)
a. The star produces electromagnetic waves with shorter wavelengths than visible light.
b. The star produces electromagnetic waves with lower frequencies than visible light.
c. The star produces pictures in addition to electromagnetic waves.
d. The star produces vibrating electrons
Answer:
It’s possibly b, or a but I am definitelyonly 49% sure
Explanation:
Hope this helped you Arianna!
Earth's average temperature typically fluctuates (cycles)
O True
O False
In a food web, all arrows should point to
A. decomposers
B. consumers
C. producers
Answer:
A. decomposers
Explanation:
In a food web, all arrows should point to decomposers
photosynthesis is the primary mover of nitrogen, true or false?
Answer:
False
Explanation:
Photosynthesis has nothing to do with nitrogen.
Read the following summary, which describes blood flow and heart output in space. Then, answer the question.
The heart doesn't have to do as much work to pump blood when in orbit. After only one day beyond Earth's gravity, astronauts have a lower blood volume. They can lose as much as 20 percent of their blood volume while on a space mission. Since the body has less blood to push around and the heart is pushing more blood with each beat, an astronaut's heart rate also slows down to compensate.
What process is being described?
Breathing
Excretion
Homeostasis
Respiration
Explanation:
respiration because it's about blood circulation
Answer:
its respiration
Explanation:
im doing the same test
What is the waste product of the Krebs cycle and how many molecules are released?
Answer:
13 molecules are released
Which of the following is the best example of a population?
Answer:
B) A school of sunfish.
In biology, a population is a number of all the organisms of the same group or species who live in a particular geographical area and are capable of interbreeding
Answer:B
Explanation: JUST TOOK THE TEST TRUST ME!
Which statement best describes evolution in a population? A. It is a change in how common a certain genetic trait of a species is from one generation to the next. B. It is a gene for a trait that helps an individual reproduce more times during its life C. It is a trait that helps an organism survive longer and produce more offspring D. It is a process by which an individual with a helpful trait produces many offspring with the same trait.
Answer:
A
Explanation: Because that means that humans reproduct another human as it keeps going on and some people call the people from our past is ancester but it moveing on to a new genaration of kids and then when they grow up the they make more kids that why it is A
Answer:a
Explanation:
what is the difference between the substrate and product?
Answer:
The key difference between substrate and product is that substrate is the staring material of a chemical reaction whereas product is the compound obtained after the completion of the reaction. The terms substrate and product are used in spontaneous reactions and in reactions upon which an enzyme acts on as a catalyst.
Explanation:
Explanation:
substrate is a chemical reaction and product is compound obtained
identify the products of what process are shown in the figure below
DNA is created by the DNA polymerase and unzipped by the DNA helicase.
What is DNA?DNA stands for deoxyribonucleic acid.
DNA is defined as a collection of molecules that are in charge of transporting and passing genetic information from parents to children.
It can also be defined as a sophisticated molecule that carries all the data required to create and maintain a creature.
There are basically two types of DNA.
Autosomal DNAMitochondrial DNAToday, DNA serves three unique purposes: genetic, immunological, and structural, all of which depend in different ways on the sugar phosphate backbone and the bases.
Replication, information encoding, mutation/recombination, and gene expression are the four functions that DNA performs.
Thus, DNA is created by the DNA polymerase and unzipped by the DNA helicase.
To learn more about DNA, refer to the link below:
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Acid deposition can be wet or dry? True or False
Answer:
True
Explanation:
Acid rain is a type of acid deposition, which can appear in many forms. Wet deposition is rain, sleet, snow, or fog that has become more acidic than normal. Dry deposition is another form of acid deposition, and this is when gases and dust particles become acidic.
which igneous rock could physically weather to beach sand that contains the minerals pyroxene, plagioclase, feldspar, and olivine?
Answer:
gabbro
Explanation:
just took the test!
An igneous rock which could physically weather to beach sand that contains the minerals pyroxene, plagioclase, feldspar, and olivine is: Gabbro.
Weathering refers to both the chemical and physical breakdown of a rock into smaller fragments (pieces) referred to as sediments.
Generally, there are two (2) main types of weathering and these are;
1. Chemical weathering.
2. Physical weathering.
Gabbro is a coarse-grained (phaneritic), mafic intrusive type of igneous rock which physically weather to beach sand containing the following sediments or minerals:
Pyroxene.Plagioclase.Feldspar.Olivine.Read more: https://brainly.com/question/21975453
Two species of three-spined stickleback fish have been found together in five different lakes. The larger, bottom-dwelling species feeds on large prey close to shore. A surface-dwelling species feeds on small plankton in open water. DNA analysis shows that the two species in each lake are more closely related to each other than they are to any of the other species in the lake. Which prezygotic mechanism most likely allowed divergence of an ancestral species into these present-day species
Answer:
The answer is "Sympatric speciation due to disruptive selection"
Explanation:
Disruptive selection is a certain type of natural choice, that aggressively favors all ends of the spectrum in a moderate community. Disruptive selection is often deduced by a phyletic prepared to change to contribute to speciation. These two species happened due to various habitats associated with extreme speciation due to various confusing choices.
Blowing into a flute can produce a sound because_______.
A. light energy is transformed into sound energy
B. the flute warms the air
C. air expands in the flute
D. air in the flute vibrates
Answer:
D
Explanation:
When you blow in a flute the holes cause vibrations which make sound which make music.
What is the difference between a guard cell and a white blood cell?
Guard cells are found in plants and white blood cells are found in animals.
What are guard cells?Guard cells are specialised plant cells that regulate gas exchange in the epidermis of leaves, stems, and other organs. They are created in pairs, with a stomatal orifice separating them. What are white blood cells?The immune system's white blood cells, also known as leukocytes or leucocytes, are responsible for defending the body against both infectious diseases and foreign invaders. All white blood cells are created and developed from hematopoietic stem cells, which are multipotent cells found in the bone marrow. All parts of the body, including the blood and lymphatic system, include leukocytes.Guard cells function to allow gaseous exchange and white blood cells are responsible for the functioning of the immune system.
Learn more about guard cells here:
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Those that get energy from food they eat are called these
Answer:
Heterotrophs, or consumers, are organisms that must obtain energy by consuming other organisms as food
Explanation:
hope it helps sorry if it's wrong
I need help with this question
Answer:
more complex cell
Explanation:
hope this will help
Which of these is responsible for the ""rough"" appearance of endoplasmic reticulum? DNA Enzymes lysosomes Ribosomes
Answer:
Ribosomes
Explanation:
How did Francesco Redi disprove the idea of spontaneous generation?
He showed that flies were not produced by meat.
He showed that microorganisms are present in air.
He showed that microorganisms cause disease.
He showed that flies spread disease.
Francesco Redi showed that microorganisms are present in air thereby disproving the idea of spontaneous generation and is denoted as option B.
What is Spontaneous generation?This is supposed production of living organisms from non living substances.
The jar was left open and had maggots in it means the flies laid their eggs which later turned to the maggot which was what Redi observed during the experiment.
Read more about Spontaneous generation here https://brainly.com/question/12682659
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What is the name for the sequence of a gene that determines a specific trait like brown eyes?
A.Nucleus
B. Allele
C. DNA
D. Centromere
Answer:
Allele
Explanation:
Which of the following conditions is least likely to have an effect on natural selection in a species of sheep that are geographically isolated on an island?
A. available niches
B. existing predators
C. chromosome number
D. available food resources
Answer:
A. available niches
Hope it helps!
Answer:
C.
Chromosome number
Explanation:
In a human karyotype, the 46 chromosomes of the human genome are arranged into 23 pairs. Encyclopædia Britannica, Inc. An organism with any multiple diploid numbers of chromosomes is said to be polyploid.
Predict what would happen if a person had too few target cell receptors on the thyroid gland? (100 points)
Answer:
They wouldn’t be able to see properly
Explanation:
When gases trap heat in the atmosphere causing the temperature to rise this is called the greenhouse effect.
A. True
B. False
Answer:
A. True
Explanation:
Gases trap the heat in the atmosphere causing the temperature to rise, this is called the greenhouse effect.
(Evolution #2 - 10)All of the following adaptations would help a plant survive in the desert EXCEPT.
Question options:
a)Having deep roots to reach ground water
b) Having a larger central vacuole to help store water
c) Having no leaves to help retain water
d) Having a thicker cell wall to help retain water