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A study of the squirrel population in a large northern city revealed that many of the squirrels inhabited large park areas that were also populated by numerous squirrel predators. The graph in Figure 15-5 reflects the data collected in regard to color and number of squirrels. Explain why the light- and dark-colored squirrels might be selected for and the medium-colored squirrels selected against. What type of selection is this?
Answers
Answer:
natural selection
Explanation:
this is to help the existence of all the squirrels species
Related Questions
Pls help!!!! Don’t just do it for the points pls help me.
A) rabbit and rat
B) snake and frog
C) lion and eagle
D) frog and bird
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Answer:
D frog and bird
Explanation:
Both the frog and the bird prey on flys
What causes oxygen debt
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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:
he says “heart muscles barely regenerate “ do you remember what stage of the cell cycle that is ?
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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:
Answers
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.
To manage the grizzly bear population better, the government of Alberta introduced a hunting lottery that awards a limited number of grizzly bear hunting licenses. Predict the year that this regulation was introduced.
Answers
Answer:
The correct answer is - 1990.
Explanation:
From the graph and year - population size table it is clearly understood that the population of grizzly bear is reduced by 39 number from year 1988 to 1989.
But after 1989 from 1990 onwards population of grizzly bear is consistently rising.
Now, let us analyse the data given in question number 2 .
No. of grizzly bear deaths in Alberta from 1976 to 1988 = 581
No. of grizzly bear deaths in Alberta from 1988 to 2000 = 281
From the above data we can clearly say now that the grizzly bear population deaths starts increasing from 1990.
So, the prediction made in question no. 1 that " the government of Alberta introduced the hunting lottery award in 1990 because in 1989 it decreases and then it starts to go up again in 1990",
What are two of the products of the Krebs cycle?
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Living things that affect other living things
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Answer:
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Answer: Aboitic and biotic focters
Explanation:
aboitic is a nonliving things.
boitic is living thing
just like ecosystem.
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!
Answers
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:
https://brainly.com/question/13600154
#SPJ2
Natural selection can lead to the formation of a new species which is called
A) fitness
B) mutations
C) selection
D) speciation
Answers
Answer:
natural selection
Explanation:
The organisms with most favourable features will survive and the other will die. See Darwin's Finches. Hope that's helpful :)
Why was the evolution of a vascular system important for land plants?
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How many species of animalia are there
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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
Answers
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
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
Answers
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 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.
Answers
Answer:
منننم
Explanation:
رون
Which of these activities will recharge groundwater, increasing the water table?
evaporation
artesian spring
a rainstorm
a well
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Help me find the words in this! Please hurry! Giving brainliest!30 points!
Answers
What are The remaining words
Answer:
Explanation:
Hope this helps! Have a nice day :)
Merchandise with a list price of $1500.00 is purchased on account for 900.00 on August 1. A.1500.00 B.900.00 C.600.00 D.882.00
Answers
Answer:
C. $600.00
Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us to find the difference between the list price and the purchased value by simply subtracting as shown below:
$1500.00 - $900.00
Which is equal to:
C. $600.00
Regards!
How many atoms of hydrogen are in NH3? *
1
2
3
4
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Which structure provides a link between the nervous and endocrine systems?
A. pituitary gland
B. hypothalamus
C. adrenal gland
D. thyroid gland
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Answer:
B
Explanation:
why is being able to convert one energy form to another so important for us to do? please explain your answer in complete sentences.
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Energy is the fundamental need of our everyday life. ... This means that we can convert electrical energy into heat energy and light energy, solar energy can be converted to chemical energy, potential energy can be converted into kinetic energy, Gravitational potential energy can be converted into kinetic energy etc
while the largest member is about 30 centimeters long. Which of these lists best describes this order?
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Cual son las consecuencias y el tratamiento del crecimiento lento en niños? Plis me pueden decir con explicación
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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.
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.
Answers
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.
hello please help i’ll give brainliest
Answers
Answer:
D an organism killing another organism for food.
Answer:
lolvyvycyvhbuubokininibu
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
Answers
D. How light and oxygen levels in water affect the growth of algae within a system over time
PLS HELP ASAP
What percentage of the human body is made up of water?
A) 10%
B) 30%
C) 50%
D) 70%
E) 90%
Answers
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%.
Which statement best predicts why a cell's progression through the cell cycle might be halted by the G1/S checkpoint?
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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.
Where does most life on earth get its energy?
Answers
Answer:
The sun
Explanation:
the sun feeds plants through photosynthesis and then consumers feed off of the plants
guys please help its easy but i don't pay attention so please help
Answers
Answer:
1. Green body color, Pointed ears, Five fingers
2. Short
3. Long hair
4. Tall, Red hair, Green eyes
Explanation:
.
The offspring of the cross-fertilization of YY pea plants with purple flowers
and yy pea plants with white flowers are
Answers
Answer: Yy; they’re purple if there’s no codominance or incomplete dominance
Explanation: