Answer:
An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs when a particular factor is manipulated.
Top-level predators help keep the number of many species in balance. These predators would belong to which group? A. invasive species B. keystone species C. dominant species
keystone species which keeps the number of other animal population in
control and low in the entire ecosystem. They play an important role
through this process and helps the food chain effectively.
dominant species - most common species; found often in the ecosystem.
invasive species - which fights for itself survival and can cause harm to
ecosystem. non-native to an ecosystem
These predators would belong to keystone species. The correct option is B.
Thus, Predators at the highest levels are frequently regarded as keystone species in an ecosystem. Compared to their biomass or abundance, keystone species have a disproportionately strong influence on the composition and operation of their ecosystem.
They are essential in maintaining the ecosystem's balance and preventing the overpopulation of particular species by controlling the populations of other species there.
The dynamics and biodiversity of the ecosystem can be significantly impacted by the removal of a keystone species.
Thus, These predators would belong to keystone species. The correct option is B.
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PLS ANSWER ASAP
How do fungi respond to stimuli and factors of their environments?
Most fungi do not grow well in extremely cold areas, like inside household freezers.
Most fungi need sufficient sunlight to produce their own food.
Most fungi live in moist environments, where they reproduce best.
Most fungi can grow in dark areas because they do not photosynthesize.
Thick stems of fungi allow them to survive on little water.
Oxygen is not needed by fungi because they do not undergo photosynthesis.
Answer:1,3,4 are the right answers just took the test
Explanation:
A molecule of DNA has been separated into two separate strands to be replicated. One of the strands is
represented by the top strand below. Use that top strand of DNA as a template to identify the next base
that will be added to the new strand of DNA being synthesized on the bottom, going from left to right.
-A-G-G-C-T-G-C-A-A-
-T-C-C-
A
C
G
T
С
G
T
DONE
Intro
What are the 4 factors effecting natural selection
Explanation:
Reproduction, heredity,variation in fitness or organisms,variation in individual character among member of the population.
a Bengal tiger wades through the Sundarbans mangroves
The Sundarbans forest in India and Bangladesh is the largest mangrove forest in the world. Mangroves have branching roots that keep these trees secure as water flows in and out of the
The branching roots of the mangrove trees slow down the flow of water and help in depositing the sediments which prevent coastal erosions.
Mangroves are halophiles and can grow in saline habitats. They grow worldwide and occur in tropical, and subtropical regions, and are also found in some temperate coastal areas. Mangroves have a complex root system and they are adapted to low oxygen conditions.
The mangroves in Sunderbans are the largest ecosystem in the world. It is the habitat of the largest predator in Asia, the tiger. The name Sunderban comes from Sundari, Heritiera fomies, the mangrove trees which are in abundance in that area.
Mangrove roots harbor microbial species that play important ecological functions in the ecosystem.
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You find a body with a temperature of 90°F. All other things being equal/typical, you would guess the victim died:
A. Almost immediately before you found it
B. About an hour ago
C. A few Hours ago
D. At least 5 hours ago
A dead body that has a temperature of 90°F mist have died almost immediately before it was found
What is temperature?Temperature is the degree of hotness or coldness of a body.
The average temperature of the human body is around 90° F.
At death, the body begins to grow cold as a result of cessation of metabolic activities.
Therefore, a dead body that has a temperature of 90°F mist have died almost immediately before it was found
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a volcanic eruption
wiping out an
entire island
Which layer of the atmosphere do airplanes reach? A. Troposphere
B. Mesosphere
C. Thermosphere
D. Stratosphere
Answer:
c
Explanation:
because c they fligh in the right spot
Answer:
D
Explanation:
they can get as high as the stratosphere. you're welcome
the diagram below shows three different proteins embedded in a cell membrane, as well as the concentration gradient surrounding the cell. Which statements correctly stated the process shown in the diagram
Protein molecules serve as transporters of molecules across the cell membrane.
Movement of molecules against their concentration gradients is a form of active transport.
What are proteins?Proteins are organic molecules which are made from amino acids linked together by peptide bonds.
Proteins embedded in the cell membranes serve as transport molecules as well as receptors.
Based on concentration gradients, proteins can function in passive or active transport.
When molecules move in the the direction of concentration gradient, it passive diffusion.When molecules move against the direction of concentration gradient, it passive diffusion.Learn more about proteins at: https://brainly.com/question/10058019
Blood type is determined by the blank on the blood cells
Answer:
oops i didnt mean to answer pls delete
Explanation:
AIDS is a disease that is in decline throughout most of the world
true or false
How does carbon dioxide affect the earth and Its atmosphere?
Increasing carbon dioxide in the earth's atmosphere is responsible for the greenhouse effect.
Decreasing carbon dioxide in the earth's atmosphere is responsible for the increase in sea levels.
Increasing carbon dioxide in the earth's atmosphere reduces the temperature on the earth.
Decreasing carbon dioxide in the earth's atmosphere is responsible for melting the polar ice caps.
Answer:
Increasing carbon dioxide in the earth's atmosphere is responsible for the greenhouse effect.
Explanation:
Carbon dioxide is a greenhouse gas. Greenhouse gases trap heat in the Earth's atmosphere which causes the earth to warm up. This is called the greenhouse effect.
2. What do plants need to survive?
Plants need light and darkness to survive.
Plants need water and light to survive.
Plants need energy and food to survive.
Plants need light and minerals to survive.
Answer:
Plants need water and light to survive.
Answer:
Plants need Water and light to survive
Explanation:
Plants, like all living things, have basic needs that must be met for them to survive. These needs include: light, air, water, a source of nutrition, space to live and grow and optimal temperature.
which codon in the sickle cell DNA is altered: 1st , 2nd or 3rd
Answer:
Mutation in one exon: 1 amino acid will be replaced by another one; variable consequences depending on the amino acid: most of the time a silent mutation; but the Sickle-cell anemia is due to a mutation at the 6th codon of the β gene (Glu->Val).
Explanation:
i googeld it
Codon in the sickle cell DNA is altered by a single nucleotide substitution that is from GAA to GUA that is in option 2, which is a change from the nucleotide adenine (A) to uracil (U) and this takes place in the beta-globin gene. option 2 is correct answer.
What is the significance of sickle cell anemia?The codon for glutamic acid is GAA is present in normal hemoglobin and changes to GUA in the sickle cell variant due to the A to U substitution at the nucleotide of the codon, and this single nucleotide substitution in the beta-globin gene leads to a change in the amino acid sequence of the protein and a change in the cell structure . This can lead to a variety of health problems, such as anemia and pain and other kidney related diseases.
Hence, a codon in the sickle cell DNA is altered by a single nucleotide substitution that is in option 2 , which is a change from the nucleotide adenine (A) to uracil (U) in the beta-globin gene, so here option 2 is correct answer.
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The question is incomplete, most probably the complete question is the below,
which codon in the sickle cell DNA is altered:
1) 1st (CCU to CCU)
2) 2nd (GAA to GUA)
3) 3rd (GAA to GAA)
Describing an Element
The element aluminum has an atomic number of 13.
How many protons are in the nucleus of an aluminum atom?
13
How many electrons does an aluminum atom have?
What is the element and number of C3H8NCl?
Based on the formula of the compound, C₃H₈NCl, the elements and their number is:
3 moles of Carbon atoms8 moles of Hydrogen atoms1 mole of Nitrogen atom, and 1 mole of Chlorine atom.What are the elements present in the compound?Compounds are pure substances which are composed of two or more elements chemically combined together.
The compound C₃H₈NCl is composed of the following elements:
CarbonHydrogenNitrogen, and ChlorineThe number of each of the element present in the compound is given by the mole ratio in which they combine in the compound.
Based on the formula of the compound, the number of each of the elements in the compound, C₃H₈NCl is:
3 moles of Carbon atoms8 moles of Hydrogen atoms1 mole of Nitrogen atom, and 1 mole of Chlorine atom.In conclusion, the number of elements in a given compound is given by the mole ratio.
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A sharp image is formed when light reflects from a(n) _____.
A)
rough
B)
smooth
C)
absorbent
D)
black
Answer:
Option B) Smooth
Explanation:
sharp image is formed when light reflects from a(n) smooth .
A sharp image is formed when light reflects from a smooth surface.
What is reflection?A reflective image is formed when light bounces off a reflective surface.
Reflective images can be sharp or blurred depending on the surface on which the light rays bounce from.
When the surface is rough, blurred images are formed. On the other hand, sharp images are formed from smooth surfaces. Sharp images are formed by mirrors because they have smooth surfaces.
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Can someone please me with this I’ll give u brain list please !
Answer:
P.E QUARTER 3 GAWAIN 4 FIGURE u
Answer: What question are you asking?
Explanation: Please specify!
What are 3 ways mountains can form along plate boundaries?
Answer:
In truth, there are three ways in which mountains are formed, which correspond to the types of mountains in question. These are known as volcanic, fold and block mountains.
Explanation:
Answer:
In truth, there are three ways in which mountains are formed, which correspond to the types of mountains in question. These are known as volcanic, fold and block mountains
Explanation:
~Kandy~
Hope this helped!
Brainliest please!
What would be the correct notation for describing a deletion in the short arm of chromosome 6 at region 2, band 4
The correct notation would be Del(6)(p24). The word 'del' means deletion.
What is chromosome notation?Chromosome notation refers to alphanumeric notations used to identify certain chromosome arrangements.
In this case, chromosome notation denotes a deletion (del) in the short arm (p arm) of chromosome 6.
The stained band of the chromosomes in the karyotype is denoted by the number 24.
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Which of the following statements is false?
People immigrate to other areas for job opportunities.
People emigrate to escape persecution due to their ethnicity.
Climate change can cause people to immigrate.
Populations increase in a region with conflict.
Answer: Im doing this question now:
INCORRECT: populations increase in a region with conflict.
People immigrate to other areas for job opportunities.
People emigrate to escape persecution due to their ethnicity.
Explanation:
People migrate for better job opportunities, to escape prosecution and high population. Therefore, the false statement is option "C".
What is migration?The moment of people, animals, and birds to different places from their birthplace is known as migration. Migration can be permanent, temporary, and also can be seasonal in the case of animals and birds. Migration is of four types such as interstate, intercity, inter-country, and intercontinental.
An example of migration is when salmon start life in rivers after that migrate to the sea for food availability and growth. After living in the ocean, they migrate back to the rivers, so that they can produce spawn. Migratory birds such as crows and bluebirds move to a different places in different seasons.
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Which is a reason for antimicrobial resistance being higher in a biofilm than in free-floating bacterial cells
Biofilms are resistant to antimicrobial chemicals due to genetic diversity.
How do biofilms increase antibiotic resistance?Biofilms are considered as a reservoir of genetic diversity. The emergence and spread of antibiotic resistance genes increase in biofilm due to horizontal gene transfer (HGT).
HGT can happen through the transfer of plasmids among microorganism cells in a biofilm through conjugation so that's why the antimicrobial resistance is higher in a biofilm than in free-floating bacterial cells.
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When scientists compare organisms at the molecular level, what are they actually studying to determine evolutionary relationships?
DNA and proteins
carbohydrates and sugars
anatomical structures
lipids and fatty acids
Answer:
DNA and proteins
Explanation:
By comparing these specific molecules in two different species, scientists can determine how closely related the species are.
Answer: DNA and proteins
Explanation: They are what is used to find out whether not something or someone is related to something or someone else.
Some species of plants contain desaturase enzymes capable of producing fatty acids not found in animals.
a. True
b. False
Answer:
True.MUFA are found in animal fats and plant oils, with olive oil being a rich source. Plant oils like corn, soybean, cottonseed, sunflower, and safflower generally have more than 50% of their fatty acids as linoleic acid and are considered excellent sources of PUFA
explain how DNA replication differs from transcription in three ways
Conclusion. Both DNA replication and Transcription involve the generation of a new copy of the DNA in a cell. DNA transcription is involved in replicating the DNA into RNA, while the DNA replication makes another copy of DNA. Both the process is involved in the production of new nucleic acids- DNA or RNA.
explain how a cladogram is constructed
Answer:
They're constructed by grouping organisms together based on their shared characteristics
Explanation:
Hope this helps :)
Pacific salmon spend part of their life in oceans and part in freshwater rivers
Answer:
True, Pacific salmon spend part of their life in oceans and part in freshwater rivers.
Explanation:
Five species of Pacific salmon thrive in the North Pacific waters of the US and Canada: chinook (also called king), coho, pink, sockeye, and chum salmon. They begin their lives in freshwater streams, lakes, and rivers and migrate to the sea as small fish called smolts.
While savannas and temperate grasslands are both types of
grasslands and share many characteristics, they also have
some differences. Compare them below by writing each
characteristic in the correct location. You will use each only
once.
• home to many types of grazers
• experience all seasons of weather
• home to bison
• home to the African elephant
• example: tallgrass prairies of North America
• example: Serengeti in Tanzania
• also known as tropical grasslands
• few trees due to little rainfall
1)
Savannas:
Both Types of Grasslands:
Temperate Grasslands:
Explanation:
- Savannah is home to many types of grazer
- temperate grasslands experience all seasons of weather
- temperate grasslands have few trees due to little rainfall
- Savannah is also known as tropical grasslands
- temperate grasslands are home to African elephants
- temperate grasslands are home to bison
- temperate grasslands: example tall grass prairies of North America
- Savannah: Serengeti in Tanzania
which characteristic describes the troposphere
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(science btw)
Playas are associated with what geologic deposit?
A. Eskers
B. Evaporites
C. Moraines
D. Herringbone cross-beds
Answer:
B. Evaporites
Explanation:
Playas generally contain fine-grained clastic sediments, such as clay or silt, and non-clastic materials, such as evaporites
