Over various spans of time, human populations have increased, decreased, or remained the same, and at both global and local levels. Which statement best explains this observation?
A. Unlike other populations, the human population changes size because of specific choices of its members.
B. Unlike other populations, the human population has the ability to grow rapidly without limit.
C. Like other populations, the human population is affected by a variety of factors in the environment.
D. Like other populations, the human population increases and decreases in a cyclical pattern.
Answer:
Which statement best describes these explanations? ... 20) The time during imprinting when specific behaviors can be learned is ... E) maximizing the population size of the forager. E ... B) members of different populations have different nutritional requirements. ... B) humans cannot choose to change their social behavior.
Answer:
C.) Like other populations, the human population is affected by a variety of factors in the environment.
Explanation:
Yes
Vernon is using the diagram shown below to develop a model of photosynthesis. The letters A, B, and C each represent a reactant or product of the process.
In the light-dependent reactions, light strikes the oval thylakoids. Compound A enters the thylakoid, and compound B leaves it. In the light-independent reactions, compound C enters a cycle in the stroma, and sugars leave the cycle. ATP and NADPH cycle between the two sets of reactions.
Should water (H2O) be included in the model as a reactant or product? If so, how should it be included?
A. Yes, as reactant A.
B. Yes, as product B.
C. Yes, as reactant C.
D. No, it should not be included.
Photosynthesis is the process of preparing food in the presence of light, water, and carbon dioxide. Photosynthesis can be light-dependent or light-independent reactions.
The correct answer is:
Option A. Yes, as reactant A.
The mechanism can be explained as:
1. Light-dependent reactions convert light energy into chemical energy.
2. The light-dependent reactions require water and light to yield oxygen, hydrogen, and energy molecules.
3. The light is used to break down the molecule of water into oxygen and hydrogen when the light strikes the thylakoid.
4. The ATP is generated in the stroma of the thylakoid membrane. The excited electrons released during the splitting of water is utilized to produce high-energy molecule.
Thus, water molecule should be used as a reactant because it yields products.
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Which is the final event that occurs when a star is forming?
Answer:
the outer layer of the star expands
Explanation:
Gravity pulls gas and dust together. A protostar forms as mass increases. A black hole forms as the core collapses.
Answer:
Hence, the final event that occurs when a star is forming is that nuclear fusion begins under high pressure.
Explanation:
1. In which direction do planets orbit the Sun, clockwise or
counterclockwise?
Answer:
Counterclockwise
Explanation:
Answer:
Counterclockwise
What was the Aristotelian philosophy of the history of the Earth? How did this affect their motivation for studying geography? Why?
Answer:
For nearly 1,000 years, Aristotle’s view of a stationary Earth at the center of a revolving universe dominated natural philosophy, the name that scholars of the time used for studies of the physical world.
Explanation:
Cross a hemophilia female with a normal male. Why is there a 100%
chance of the sons having hemophilia?
Answer:
No
Explanation:
The normal male would need it in order to have a son with hemophilia.
If there is moisture in the atmosphere as the front (pictured) comes through, what effect could it have on temperature and weather?
(ANSWER FAST!!)
Answer:
c)The temperature would decrease and there would be a chance of thunderstorms.
Explanation:
The temperature would decrease and there would be a chance of thunderstorms. So, the correct option is C.
What is Thunderstorm?A thunderstorm is defined as a storm with lightning and thunder produced by a cumulonimbus cloud, usually producing strong winds, heavy rain, and sometimes hail. Thunderstorms are so called because of the thunderous loud noise they make.
There are three basic elements that lead to the development of thunderstorms: moisture, an unstable atmosphere, and some way for the atmosphere to move where the moisture is necessary to produce thunderstorm clouds and precipitation.
Thus, the temperature would decrease and there would be a chance of thunderstorms. So, the correct option is C.
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please help asap i will mark brainliest
Answer:
a
Explanation:
any bodily movement produce by skeletal muscles that requires energy expenditure
Answer:
Physical activity is defined as any bodily movement produced by skeletal muscles that results in energy expenditure. The energy expenditure can be measured in kilocalories.
I hope this helps
Give two names for a hydrogen atom with a missing electron
Answer:
Cation,anion
Explanation:
A beaker contains 0.64 L of water. What is the volume in milliliters?
0.64 L in milliliters is 640 milliliters.
Which statement is part of the cell theory ?
A)all living organisms are made of cells
B)all cells contain DNA that they pass on to daughter cells
C)all cells depend on their surroundings to provide energy
D)all cells have a nucleus
Answer:
A.
The answer is A bc THe Cell theory is what the conditions cells follow.
Hope this helps! ;)
~Emilie G.
50 points!!!!!!!! will mark brainliest
Answer:
Answer:
correct. its true and I absolutely agree with you. good job
Explanation:
Bc y=2x-1^3 is the equation
Answer:
Mutualism
Explanation:
It's mutualism because mutualism means with both people benefit from something
Hope that helps !
Darwin's experiments are just one way to study phototropism. A student wants to investigate the effects of phototropism in bean plants. She places a light source directly above one plant, at a forty‐five degree angle to another, and at a ninety‐degree angle from the third.
What is her independent variable?
What is a hypothesis she might write for her experiment?
Answer:
Her independent variable is the light source and her hypothesis is what YOU think might happen
Answer:
The independent variable is what is being changed or altered in the experiment (light position), the dependant variable is what is altered or changed by the independent variable (plant).
Explanation:
Consider what is being changed in this experiment to investigate the effects? The plant itself is not changed by the experiment but the positioning of the light source is. That is your independent variable. The plant may change as a result of the independent variable but isn't being altered or changed as part of the method (dependent).
What is a hypothesis she might write?
Consider a hypothesis as a prediction. Researchers come up with their hypothesis based on the information they already know. So to write your hypothesis think about what you already know about phototropism. What do you think will happen to the plant in relation to the positioning of the lamp? Will the plant not move? Will it bend or move to face the lamp?
Hope this helps.
Use organic in a sentence.
Answer:
Nowadays, we are having organic vegetables.
Answer:
The apple that I bought today has never been sprayed with pesticides, so they labeled it as organic!
or
Hydrogen is an organic compound
Whoever says it first gets brainliest! Please help. 18 points!
Answer:
it c
Explanation:
Answer: d
E
xplanation:
Draw a sketch of your completed DNA model or insert a picture of the model you created. it doesn't have to look perfect !! please help will mark brain least
Answer:
there
Explanation:
Which of the following describes what might happen with a sudden increase in precipitation in the grassland biome? (4 points)
a
Rise in drought-tolerant plants
b
Salt and sediment deposition
c
Increase in plant and animal diversity
d
Nutrient loss and soil erosion
Increase in plant and animal diversity describes what might happen with a sudden increase in precipitation in the grassland biome. Therefore, the correct option is C.
What is precipitation?Precipitation is the phenomenon in which condensed water vapors falls on the earth's surface under the influence of gravity.
A sudden increase in precipitation in the grassland biome can provide more water for plants and support their growth, which can lead to an increase in plant productivity and diversity. This in turn can provide more food and habitat for animals, leading to an increase in animal diversity as well.
While there may be some nutrient loss and soil erosion as a result of increased runoff, the overall effect on the ecosystem is typically positive in terms of increased biodiversity. Salt and sediment deposition are not typically associated with an increase in precipitation in the grassland biome. Therefore, the correct option is C.
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Organisms developed _________ that provided its own food source.
Answer:
autotrophic
Explanation:
An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers. Plants are the most familiar type of autotroph, but there are many different kinds of autotrophic organisms.
Answer:
Explanation:
An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.
Who invented the microscope?
Answer:
Zacharias Janssen
Explanation:
Answer:
Washington Teasdale
Explanation:
you can just research this online
a data table shows the height of a person on his birthday each year from age 2 to 12. What trend would you expect to see in a lime graph of the data.
Describe how an enzyme’s structure affects its function:
Answer:
Most enzymes are proteins and therefore their function is specific to their structure. Enzymes function as a catalyst to increase the rate of virtually all the chemical reactions that take place in a living system
Explanation:
Which organism is an animal-like protist?
cilia
dinoflagellates
amoeba
truffle
1. The first living organism in a food chain is
a) producers
b) primary consumers
c) heterotroph
d) chemosynthesizer
2. The second living organism in a food chain is generally...
a) herbivore
b) carnivore
c) detrivore
d) a photoautotroph
3. Plants use nitrogen to grow and are generally helped by cycling N from the air to the land by bacteria in a process called...
a) nitrogen fixation
b) denitrification
c) decomposition
d) emmigration
Answer:
1-a 2-a 3-a
1. The first living organism in a food chain is
a) producers
b) primary consumers
c) heterotroph
d) chemosynthesizer
2. The second living organism in a food chain is generally...
a) herbivore
b) carnivore
c) detrivore
d) a photoautotroph
3. Plants use nitrogen to grow and are generally helped by cycling N from the air to the land by bacteria in a process called...
a) nitrogen fixation
b) denitrification
c) decomposition
d) emmigration
The pancreas is an organ present in some animals. It produces enzymes that are used in the digestive system of the animal. Which cell structure is likely to be abundant inside pancreas cells?
A. Cell walls, because cell walls cannot be digested by enzymes
B. Chloroplasts, because chloroplasts provide the energy for making enzymes
C. Nuclei, because nuclei contain the instructions for synthesizing enzymes
D. Ribosomes, because enzymes are synthesized on ribosomes
Answer: the answer is D Ribosomes, because enzymes are synthesize on ribosomes
Explanation:
Because we need more protein to be produced in are pancreas
The messenger RNA (mRNA) sequence is read by the ribosome, which then interprets the genetic code into a predetermined string of amino acids. These amino acids then form lengthy chains, which fold to form proteins. Thus, option D is correct.
What is the role of ribosomes in the enzyme formation?Protein synthesis is always carried out by the ribosome, which converts the genetic code produced in mRNA into an amino acid sequence.
Ribosomes carry out the initiation, elongation, and termination of peptide synthesis using metabolic energy, soluble transfer RNA's, and cellular auxiliary proteins.
The biocatalyst, which are proteinaceous in nature, are enzymes. The ribosomes found on the endoplasmic reticulum produce these. A cell's ribosomes are referred to be its “protein factory.”
Therefore, Ribosomes, because enzymes are synthesized on ribosomes.
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Which animal can leave its eggs to hatch and does not need to take care of its infants?
Answer:
snakes
Explanation:some mother snakes abandon their eggs and the infants already know how to hunt and survive
Answer: Sea Turtles and frogs
Explanation: because they lay them in a place under ground or in a place where not of animals can take them
Which statement accurately describes sickle cell anemia?
Answer:
Sickle cell anemia is an inherited red blood cell disorder in which there aren't enough healthy red blood cells to carry oxygen throughout your body
Explanation:
Answer:
A group of disorders that cause red blood cells to become misshapen and break down.
Explanation:
With sickle cell disease, an inherited group of disorders, red blood cells contort into a sickle shape. The cells die early, leaving a shortage of healthy red blood cells (sickle cell anemia), and can block blood flow causing pain (sickle cell crisis).Infections, pain, and fatigue are symptoms of sickle cell disease.
What is the theory of natural selection, and why does it occur in an organism?
Answer:
Natural Selection is survival of the fittest aka Darwinism. It basically states that the strongest survive and the weakest don't. Maybe it's through food shortages, bad weather, or predators. It occurs in an organism for population control. If there is too big of a population, then there will be a recourse drought and natural selection will do its thing again.
what is a defining characteristic in eukaryotic cells? What type of organisms have eukaryotic cells
Answer:
The defining feature of a eukaryotic cell is the presence of a nucleus. Most animals and plants have eukaryotic cells.
Explanation:
Eukaryotic cells have a nucleus, and membrane-bound organelles All multicellular organisms are made up of eukaryote cells
Eukaryotic cells are one of the two types of cell types prokaryotic and eukaryotic. There are various structural and functional differences found in them.
Eukaryotic cells are defined by:
the presence of a nucleus enclosed by a complex nuclear membranepresence of membrane-bound organellescell wall may or may not be presentcell division is mitosis or meiosisEukaryotic organisms have various range of organisms including mostly all multicellular such as animals, plants, fungi, and protists, as well as most algae. Eukaryotes can be single-celled as well.
Thus, the eukaryotic cells have a nucleus, All multicellular organisms are made up of eukaryote cells
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Study the image.
What do the arrows at point 3 indicate?
A) Warm air is cooling quickly.
B) Cool air is above water.
C) Cool air is warming quickly.
D) Warm air is above land.
Answer:
The answer is C
Explanation:
Answer:
A
Explanation:
The warm air is sinking meaning that it's cooling down. Cooler air is denser that's why they sink while warmer air is less denser, it rises.