Answer:
Natural selection is the theory that states that if individuals of different genotypes are differently qualified to live and have viable offspring under prevailing conditions, those genes that promote greater fitness must spread at the expense of others. Natural selection is therefore the process that occurs when more capable traits are inherited from one generation to another due to the interaction between the characteristics of the organism and its environment. The first to propose this theory was Charles Darwin.
What describes the goal of genetically engineering crops?
Answer:
Genetically modified crops (GM crops) are those engineered to introduce a new trait into the species. Purposes of GM crops generally include resistance to certain pests, diseases, or environmental conditions, or resistance to chemical treatments (e.g. resistance to a herbicide).
Use the drop-down menus to complete each sentence about the layers of the atmosphere.
If the
did not exist, Earth might be destroyed by chunks of rock from space.
The
is located 12 to 50 kilometers from Earth’s surface.
Both the
get colder as altitude increases.
The ozone in the
protects people from ultraviolet (UV) radiation.
The
has the highest temperature of any layer in Earth’s atmosphere.
Answer:
Mesosphere
Stratosphere
Trophosphere and Mesosphere
Stratosphere
Thermosphere
Explanation:
The Stratosphere
This extends upwards from the tropopause to about 50 km. It contains much of the ozone in the atmosphere. The increase in temperature with height occurs because of absorption of ultraviolet (UV) radiation from the sun by this ozone.
Troposphere
Earth’s troposphere extends from Earth’s surface to, on average, about 12 kilometers (7.5 miles) in height.
Mesosphere
Located between about 50 and 80 kilometers (31 and 50 miles) above Earth’s surface, the mesosphere gets progressively colder with altitude. In fact, the top of this layer is the coldest place found within the Earth system, with an average temperature of about minus 85 degrees Celsius (minus 120 degrees Fahrenheit).
Thermosphere
Located between about 80 and 700 kilometers (50 and 440 miles) above Earth’s surface is the thermosphere, whose lowest part contains the ionosphere. In this layer, temperatures increase with altitude due to the very low density of molecules found here.
Answer:
1=C
2=B
3=C
4=B
5=A
Explanation:
(Help me pls)
What did Darwin find at the higher elevations of the Andes Mountains?
A) a fossil of a species similar to a giant armadillo
B) fossils of sloth-like organisms the size of elephants
C)fossilized shells of marine organisms
D)fossils of dinosaurs
Answer:
d.
Explanation:
next me answer my question ⁉️
2. Which of the following would be a cause of chemical weathering?
a. hurricanes
b. freezing and thawing
c. tree roots splitting a rock
d. acid rain
Answer:
acid rain
Explanation:
5.) The following examples are vestigial organs EXCEPT:
O appendix
O tailbone(coccyx)
O human liver
O Pelvic bone(little bone) of the snake
Answer:
C
Explanation:
because a vestigal organ is one that serves no relevant purpose and we do not need any of the following options except for the liver.
Which contains alleles A and B in the same genotype what is this phenomenon called
Answer:
Codominance, in genetics, phenomenon in which two alleles (different versions of the same gene) are expressed to an equal degree within an organism. As a result, traits associated with each allele are displayed simultaneously. An example of codominance is seen in the MN blood group system of humans.
Explanation:
The red imported fire ant is an invasive species that has affected many native species in North America. Scientists wanted to see the effect of the fire ants on the survival of a certain kind of native bird. They treated nests of the bird with a chemical that kills the ants. They treated a different percentage of bird nests in different areas. In some areas, only 25% of the bird nests were treated with the chemical. In other areas, 100% of the bird nests were treated with the chemical.
The graph below shows the percent of birds surviving compared to the percentage of bird nests treated with the ant-killing chemical.
What conclusion about the effects of fire ants on the birds is best supported by the graph?
A.
The birds are more likely to survive when there are many fire ants, so the ants are likely outcompeting the birds for resources.
B.
The birds are more likely to survive when there are many fire ants, so the ants are likely providing resources for the birds.
C.
The birds are less likely to survive when there are many fire ants, so the ants are likely taking over the niche of the birds.
D.
The birds are less likely to survive when there are many fire ants, so the ants are likely predators of the birds.
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ok
Explanation:
Bob thinks that plants get their materials for growth from the soil. Write a couple of sentences to explain why is Bob incorrect.
Blood leaves the left ventricle through the vessel known as:
A) pulmonary trunk
B) superior vena cava
C) inferior vena cava
D) aorta
HELP!!! The plants are taking
over!
Photosynthesis starts with two
reactants and changes into two
products. This growth doesn't
ADD up.
61
glucose
15
phloem
>
Photosynthesis Puzzle #1
Photosynthesis Puzzle #1
33
carbon
dioxide
42
xylem
Photosynthesis Puzzle #1
Photosynthesis Puzzle #1
17
52
water
oxygen
The reaction of the puzzle of photosynthesis will be:
33+52→61+17
i.e. carbon dioxide + water→ glucose+ oxygen.
Carbon dioxide and water from air is converted into glucose and oxygen by using sun energy. Glucose is used by plants and oxygen is released which is used by animalsWhat is photosynthesis?It is the process in green plants by which they use sunlight to synthesize nutrients from carbon dioxide and water
To know more about photosynthesis here
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Cancer is when what cell process is uncontrolled?
Answer:
Division of cells
Explanation:
Help!!!!!!!!!! Nowww! I’ll mark YOU BRAINLY!!
Answer:
Explanation:
1. 28
2. Temperature
3. Pioneer species
Hope this helps:)
Answer:
Explanation:
For 1 It A
For 2 It C
For 3 i think it D
Hope it helped
And good luck on the Quiz
Lancelets are the only extant group of cephalochordates. True or False
Answer:
True
Explanation:
This is because Cephalochordates are the recent ancestor of lancelets. They have muscle segmented Brook.The lancelets are mostly marine organisms that live in shallow, tropical and temperate oceans. The lack a well differentiated head region but they have brain region.
Which element listed in the table above has an atomic mass of 79?
Answer: selenium Hope it helps
Explanation:
Mitosis ans meiosis are both ways in which cells___?
Answer:
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Below we highlight the keys differences and similarities between the two types of cell division.
Explanation:
A family purchased a frozen turkey for Thanksgiving and placed it in the refrigerator. About how long will it take to thaw a twelve-pound turkey?
Answer:
36 hours
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.
true or false ?
the oxygen level inhaled air is 5% greater than exhaled hair because our body cells have not used any oxygen yet
a diagnostic procedure that involves removing a tissue sample from a patient.
a. lipotrispy
b. biopsy
c. pathogenesis
d. oncology
Answer:
b. biopsy
Hope this helps!
Answer:
Biopsy.
Biopsy is the removal of tissue for further medical examination or for science.
Hope this helps.
Azumayay
non-cancerous tumors are called what
Answer:
Benign Tumors
Explanation:
A researcher wants to learn more about inherited traits which part of a cell might she study to learn about inherited traits?
A: The nucleus because it contains chromosomes that hill genetic information responsible for inherited traits
B: The cell wall because it holds all of an individual's genetic information
C: The Mitochondria because it contains ribosomes that holds genetic information responsible for inherited traits
D: The cell membrane because it holds all of an individuals genetic information
PLEASE HELP ME ON BOTH QUESTIONS ASAP!!!!!!! NO LINKS PLEASE
Answer
1. B
2. D
THEY ARE WELL VERIFIED
honey i shrunk the scientists
Answer:
Yes
Explanation:
Yes, but No because Yes
What happens when red blood cells decreases in the blood?
Answer:
Having a low level of red blood cells can diminish the ability of the blood to transport oxygen, which can cause the heart to come under strain as it works to get enough oxygen to the tissue. Anemia can happen with lower red blood cell count or when red blood cells dont contain enough hemoglobin.
Why do steeper mountain slopes have faster rates of erosion by
rivers and streams?
Which type of mutation occurs only in gametes?
Answer:
all
Explanation:
j
!!
4. Within aquatic biomes, there are many different
environments where different types of organisms
thrive. Phytoplankton, seaweed and other organisms
that perform photosynthesis live in the ocean waters
near the surface, but not in the deepest ocean waters.
Which statement about surface water is most useful
for explaining this observation? (17.2)
a. Only surface water is warm enough for
photosynthesis
b. Only surface water has sufficiently low salinity for photosynthesis
c. Only surface water has dissolved oxygen needed for photosynthesis
d. Only surface water has received enough sunlight for photosynthesis
Answer:
D
a. Maybe
b. Doesnt make sense really
c. doesnt make sense
D. Makes the most sense
COMPLIMENTARY STRAND OF A T C G A C G T T A A C G
Answer:
T A G C T G C A A T T G C
Explanation:
The complimentary DNA strand. Please tell me if you wanted RNA and I will correct it!
During replication, which sequence of nucleotides would bond with the DNA sequence TATGAC?
Answer: ATACT
Explanation:
PS: PLEASE DO NOT PUT A LINK! THERE ARE 4 QUESTIONS.
which of the following are the two characteristics of communities that are related to stability? (choose all that apply)
a. species susceptibility
b. species evenness
c. species sensitivity
d. species richness
2. after a disturbance, a stable community is able ti either resist change (called _________) or recover quickly (called __________).
a. resistance ; resilience
b. resilience ; sensitivity
c. resistance ; sensitivity
d. resilience ; resistance
3. according to the stability-diversity hypothesis, why is a corn field a low stability community?
a. has average species richness
b. has extremely low species richness
c. has extremely high richness
d. had no species richness
which of the following are abiotic disturbances to a community? (choose all that apply)
a. construction
b. forest fire
c. volcanic eruption
d. flooding
Answer: 1. b. species evenness, d. species richness. 2. resistance; resilience. 3. has extremely low species richness. 4. b. forest fire
c. volcanic eruption
d. flooding brainliest?
Explanation:
The correct options are:
1. b. species evenness, d. species richness.
2. a.resistance; resilience.
3. b.has extremely low species richness.
4. b. forest fire, c. volcanic eruption, d. flooding brainiest.
What is a community?A community is a place where more than two species are living together in an ecosystem having the same geographical areas.
The stability of a community is caused when all the species have a constant population over time.
Thus, the correct options are:
1. b. species evenness, d. species richness.
2. a.resistance; resilience.
3. b.has extremely low species richness.
4. b. forest fire, c. volcanic eruption, d. flooding brainiest.
Learn more about community
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