Answer:
its probably
D. all the above
Explanation:
-
Why was the evolution of a vascular system important for land plants?
Which is a difference between the Paleozoic and Mesozoic era?
Explanation:
Animals lived in the water during the Mesozoic and on land in the Paleozoic. Animal complexity increased during the Paleozoic while the first flowering plants appeared in the Mesozoic era. ...
The Paleozoic era, not the Mesozoic era, had the first dinosaurs. The first mammals emerged in the Paleozoic era, not the Mesozoic era. The Mesozoic era, not the Paleozoic era, had the first animals with shells.
Which statement best predicts why a cell's progression through the cell cycle might be halted by the G1/S checkpoint?
Answer:
The missing options are:
A. Spindle fibers have not correctly attached to chromosomes.
B. Damage occurred to DNA when it was being copied in G1.
C. There are not enough nucleotides available to construct new DNA.
D. Proteins necessary for M phase of the cell cycle have not been produced.
The correct option is C.There are not enough nucleotides available to construct new DNA.
Explanation:
During the G1 phase, the cell grows in size since it prepares its organelles and molecule combinations for the next phase of the cell cycle, the S phase. Before the cell transitions to the S phase, it has to pass through a checkpoint that makes sure that there are no mutations, it has grown enough, and has the necessary molecules for the next phase, which is the synthesis of DNA. If there are not enough nucleotides, the cell will not be able to synthesize new DNA in the S phase, so the checkpoint stops the cells from moving to this phase till it has all the necessary things to do it.
Based on the living things in the pyramid, please tell me what examples would fit into these categories
Primacy Producers, primary consumers, secondary consumers, and tertiary consumers.
Answer:
Primacy Producers----- Oak tree , primary consumers------ Caterpillars , secondary consumers ------- blue jays, and tertiary consumers ----- hawk.
Explanation:
Oak tree refers to the primacy Producers in this pyramid because it produces food by using the solar energy. Caterpillars are primary consumers that feeds on the producers and also known as herbivores, blue jays are the secondary consumers that feeds on the primary consumer which is the caterpillar, and tertiary consumers are the hawk that feeds on the secondary consumer i.e. blue jays. In this way, energy flows in the food chain of an ecosystem. During this flow of energy, only 10% of energy is transferred from one trophic level to another while the remaining releases in the environment in the form of heat energy.
Students filled two beakers with 500 mL of water each. They placed three drops of live algae culture into each of the beakers, then used a dissolved oxygen sensor to measure the oxygen content of the water in each beaker. The students then stirred 5 mL of nitrogen-rich fertilizer into one of the beakers, and labeled the beaker A. Nothing was added to the second beaker, which the students labeled B. Both beakers were placed under a high-intensity light over a weekend. On Monday, the students measured the amount of oxygen in the water of each of the beakers. Which aspect of the watershed were these students trying to model?
A. The effect of fertilizer-contaminated surface water flowing as runoff into a waterway
B. How stagnant or non-flowing water can result in providing a habitat for living organisms such as algae
C. The inverse relationship between water, light, oxygen, and photosynthesis
D. How light and oxygen levels in water affect the growth of algae within a system over time
D. How light and oxygen levels in water affect the growth of algae within a system over time
What causes oxygen debt
Answer:
The amount of oxygen required to remove the lactic acid, and replace the body's reserves of oxygen, is called the oxygen debt. When someone who has been exercising pays back an oxygen debt, it can take from a few hours for normal exercise, to several days after a marathon.
Explanation:
Answer:
The amount of oxygen required to remove the lactic acid, and replace the body's reserves of oxygen
Explanation:
what are the end product of the digestion of food
Explanation:
The end products of digestion process can be listed as follows: Carbohydrates like starch and disaccharides will be digested into monosaccharides like glucose, fructose and galactose. Proteins will be digested into amino acids. Fats will be digested into fatty acids and glycerol
How can individuals help to conserve the resources in the picture?
The manure pit has been emptied and Ted now has to enter the manure pit to perform some maintenance work. He is hooked up to a lifeline and his colleague Sam is outside the pit ready to assist should a rescue become necessary. Do you notice any issues in this scenario?
The pit if empty so there is no need for additional precautions
Ted is wearing a lifeline so there is no need for additional precautions
Sam should be wearing a self-contained breathing apparatus
Ted should be wearing a self-contained breathing apparatus
Answer:
D. Ted should be wearing a self-contained breathing apparatus
Explanation:
According to this question, Ted has entered into an empty pit in order to do some maintenance work and his colleague, Sam, is outside the pit ready to assist him in case of emergency.
It is necessary to take additional precautions even if Ted is tied to a lifeline or the pit is empty. However, the additional precaution should be that Ted should be wearing a self-contained breathing apparatus (SCBA) in case of breathing or respiratory problems down the pit.
The nitrogen cycle produces amino acids which allow plants to make ?
A. Sugar
B. nitrogen
C. protein
D. carbon
Which of the following flower types are used to complete a design by adding depth?
O Line flowers
O Filler flowers
O Mass flowers
O Form flowers
Answer:
filler flowers
Explanation:
The diagram below represents stages of a cellular process for a cell with 4 chromosomes
Answer:
Explanation:BCDA
define metabolic water
Answer:
Metabolic water refers to water created inside a living organism through their metabolism, by oxidizing energy containing substances in their food.
Explanation:
hope this helps you.
Hi I need help with 6!
Answer:
Overpopulation and Overconsumption, plastic production, disruption of the reefs, draining streams rivers, and production of black carbon
What are two of the products of the Krebs cycle?
while the largest member is about 30 centimeters long. Which of these lists best describes this order?
Cual son las consecuencias y el tratamiento del crecimiento lento en niños? Plis me pueden decir con explicación
Answer:
Efecto adverso sobre la salud.
Explicación:
El crecimiento lento de los niños afecta la salud de los niños, haciéndolos más susceptibles a enfermedades e infecciones, pero también afecta su desarrollo mental y físico. Las inyecciones de hormona del crecimiento y los medicamentos de reemplazo de la hormona tiroidea son tratamientos que se usan para tratar el crecimiento lento en los niños. La deficiencia de la hormona del crecimiento se puede tratar mediante inyecciones de hormona del crecimiento. Los medicamentos de reemplazo de la hormona tiroidea se utilizan para compensar la hipoactividad de la glándula tiroides del niño.
If a heterozygous fire-breathing dragon
is crossed with one that does not
breathe fire, what proportion of their
offspring will be fire breathers?
Jupiter's Great Red Spot is believed to be ____________.
a. a volcanic area
b. the effect of a mountain system on Jupiter's wind system
c. a zone of high ammonia concentration
d. a large rotating hurricane-like storm (cyclone)
e. none of these
The Great Red Spot, a permanent region of high pressure in Jupiter's atmosphere, is responsible for producing the largest anticyclonic storm in the Solar System. Thus, option D is correct.
What Jupiter's Great Red Spot rotating hurricane-like storm?In Jupiter's atmosphere, there is a huge, rotating storm known as the Great Red Spot. It is similar to an Earthly hurricane, but considerably bigger.
The Great Red Spot on Jupiter is larger than Earth by more than two times! Within this storm, winds can gust as high as 270 miles per hour (ca. 435 km/h).
When astronomers first focused their telescopes on Jupiter in the 17th century, they discovered a striking reddish patch on the massive planet. More than 300 years later, the Great Red Spot is still visible in Jupiter's atmosphere. It is now understood to be a big storm that is rotating like a cyclone.
Therefore, Jupiter's Great Red Spot is believed to be (a large rotating hurricane-like storm (cyclone)).
Learn more about Jupiter's here:
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How many atoms of hydrogen are in NH3? *
1
2
3
4
hello please help i’ll give brainliest
Answer:
D an organism killing another organism for food.
Answer:
lolvyvycyvhbuubokininibu
Susan has been assigned to build a model of a plant cell. She has many materials to help her build her model: plastic wrap, a plastic sandwich
bag, aluminum foil, different kinds of dry pasta, stiff cardboard, and pipe cleaners.
She selects the stiff cardboard to represent which outside supporting part of the plant cell?
O A. cell membrane
O B. mitochondria
O c. cell wall
D. nucleus
E. vacuole
HELP!
i believe the answer is c, cell wall^^
Cell wall supporting part of the plant cell. So, the correct option is C.
What is Cell wall?A cell wall is defined as the structural layer surrounding certain types of cells present outside the cell membrane which can be rigid, flexible and sometimes rigid. The cell wall provides both structural support and protection to the cell which serves as a filtering mechanism.
Cell wall present only in plants and some fungi, bacteria and algae. The plant cell wall is arranged in 3 layers which are composed of carbohydrates, such as pectin, cellulose, hemicellulose and other small amounts of minerals, which form a network with structural proteins to form the cell wall.
Thus, Cell wall supporting part of the plant cell. So, the correct option is C.
Learn more about Cell wall, here:
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How do limiting factors control population growth?
Answer:With a positive relationship, these limiting factors increase with the size of the population and limit growth as population size increases. With a negative relationship, population growth is limited at low densities and becomes less limited as it grows.
Explanation:
Two samples of radioactive material from the same rock is prepared for testing. Sample A is cut into a 2 inch cube. Sample B is crushed into a fine powder. Compared to the half-life of the material in Sample A, the half-life of the material in the powdered Sample B is:
Answer:
The same
Explanation:
Half life is the time taken for the number of atoms in a radioactive sample to decrease to half of the initial number of atoms. It is also the time taken for the activity of a radioactive sample to decrease to half of its original value.
If samples A and B were obtained from the same rock, then they contain the same number of atoms having the same initial activity even though the samples were not prepared in the same way for analysis.
Hence, samples A and B have the same half life.
7. In an abandoned field, the gradual replacement of grasses by shrubs and then by trees is known as A) predation B) saprophytism C) ecological succession D) transfer of energy
Answer:
C. Ecological Succession.
Explanation:
A is incorrect because predation is the act of an animal preying on another animal for food which has nothing to do with grass and trees. B is incorrect because saprophytism is the ability of certain plants to live in dead or decaying organic matter. For example, imagine mushrooms growing on decaying trees. That still doesn't explain what the REPLACEMENT of grasses, bushes, and trees are called. D is incorrect because that is energy transferring to another, that answer wouldn't make sense. From what I know, ecological succession is the process of change in the species structure of an ecological community over time. So, if there is an abandoned field but grasses and trees are slowly popping up there over time (There's a lot more to it) then C, ecological succession is your answer.
Hope this helps! :3
Which structure provides a link between the nervous and endocrine systems?
A. pituitary gland
B. hypothalamus
C. adrenal gland
D. thyroid gland
Answer:
B
Explanation:
PLS HELP ASAP
What percentage of the human body is made up of water?
A) 10%
B) 30%
C) 50%
D) 70%
E) 90%
Answer:
According to question,Option D is the correct
Explanation:
Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.
Living things that affect other living things
Answer:
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Answer: Aboitic and biotic focters
Explanation:
aboitic is a nonliving things.
boitic is living thing
just like ecosystem.
The Grand Coulee dam and hydroelectric plant are located on the Columbia River in Washington state.
How does this hydroelectric power plant affect the natural resources in the state over a long period of time?
O A Coal and gas are less likely to be burned to generate electricity,
B. Water quality is improved when the dam filters the river system,
O c. Soil resources are conserved when reservoirs are filled behind the dam.
O D. Air quality decreases when electricity is generated through hydroelectric power.
Answer:
منننم
Explanation:
رون
he says “heart muscles barely regenerate “ do you remember what stage of the cell cycle that is ?