Answer:
C
Explanation:
One square mile of forest is divided up into ten equally sized quadrats, 1/10th of a mile each. In quadrat #3, twenty-five pine trees are counted.
What would be a reasonable estimate for the total number of pine trees in the larger plot of land (one square mile or forest)?
A 2500
B 25
C 250
Why is it Nondisjunction?!
Anaphase of mitosis, where sister chromatids go apart and the microtubules pull them in different side directions. The chromosome shown in image red fails to part away properly, its sister chromatids stick together and get pulled to the same side, as a result of in mitotic nondisjunction of this chromosome.
If you see signs of life such a holes in trees, tracks, and nests, you may estimate the population size using which method?
Answer:
INDIRECT METHODS
Explanation:
To estimate population density there are two possible methods: Direct methods and indirect methods.
Abundance indexes are the parameters related to density, and they reflect changes that might happen in the target population density. They are commonly used to compare population sizes, for instance, the abundance of an insect species during the winter and the summer. These indexes are easy to get, so it is possible to make many estimations and make statistical analyses to detect differences.
There are two types of abundance indexes:
The ones based on direct observation and/or capture → DIRECT METHODThe ones based on traces and frequencies → INDIRECT METHODINDIRECT METHODS:
When talking about traces, we are referring to any mark or evidence left by animals, such as footprints, holes, feces, sediments, hair, marks, pathways, nests, shelters, dead bodies, food leftovers, songs, noises, among many others. Traces are directly related to population abundance.
The advantages over the indexes that use capture and observation are that traces are not influenced by detectability, they are much easier to use, cheaper, and they turn to be significant with less visible species.
The paths are useful, but they last for a long time in the habitat, so they do not entirely reflect the recent presence of the animal in a specific moment. However, on the paths, there can be other traces such as footprints, hair, and others that are easier to identify and which reflect a recent pass. These can be used to determine abundance.
In shy species, the alternative to evaluate abundance is to constate their presence in a sampling unit, this is, their frequency. Frequency can be used as an abundance index and, under certain conditions, might be statistically tested to evaluate abundance differences.
Which of the following human activities reduces the level of
ozone in the atmosphere?
a. Using artificial lighting in scientific polar stations
b. Using large banks of solar cells for energy production
c. Releasing chlorofluorocarbons from aerosol cans
d. Destroying large areas of the equatorial rain forests
The following human activities reduces the level of ozone in the atmosphere is Releasing chlorofluorocarbons from aerosol cans.
Thus, option "C" is correct answer.
What is a definition of atmosphere?An atmosphere is the layers of gases covering a planet or other heavenly body.
Earth's atmosphere is made up of about 78% nitrogen, 21% oxygen, and 1 percent other gases.
Thus, option "C" is correct answer.
To learn more about atmosphere click here:
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Endocytosis and exocytosis require energy.
True or false?
A piece of wood weighs 72 g. What is its density
if its volume is 20 cm'?
Answer:
desnity is equal weight divided by volume ,so 72/20= 3.6
Explanation:
Hope this helps
The resting membrane potential results when the tendency for attraction to opposite charges iside the cell. To diffuse out of the cell is balanced by their
Answer:
K⁺
Explanation:
The resting membrane potential results when the tendency for K⁺ to diffuse
Resting membrane potential is simply the electrical PD across plasma membrane whenever the cell has entered its Non-excited state.
hello please help i’ll give brainliest
Answer:
living
Explanation:
explain the global water crisis in your own words
Explanation:
Water is the basic necessity of every human being. But, water scarcity is a major issue that is rising very rapidly in modern-day India. The problem has become so severe that in many states the groundwater has almost dried up and people have to depend on water supply from other sources. In addition, water is one of the most misused commodities that we still waste. It is the central point of our lives but not the central point of our focus.
In the past, people understand the value of water and plan their lives around it. Moreover, many civilizations bloom and lost on account of water. But, today we have knowledge but we still fail to understand the value of water.
Reason for Water Scarcity in India
Water scarcity is the cause of mismanagement and excess population growth of the water resources. Also, it is a man-made issue that continues to rise. Besides, some of the reasons for water scarcity are:
Wasteful use of water for Agriculture- India is one of the major food growers in the world. That produces tons of quantity of food to feed its population and export the surplus that is left.
In addition, producing this much food requires a lot of water too. The traditional method of irrigation wastes a lot of water due to evaporation, water conveyance, drainage, percolation, and the overuse of groundwater. Besides, most of the areas in India use traditional irrigation techniques that stress the availability of water.
But, the solution to this problem lies in the extensive irrigation techniques such as micro-irrigation in which we provide water to plants and crops using a sprinkler or drip irrigation.
Reduction in water recharge systems- Due to rapid construction that uses concrete and marbles do not let the rainwater to get absorbed in the soil. But, if we install some mechanism in our houses that can hold the rainwater then we can recharge the groundwater.
Lack of water management and distribution- There is a need for an efficient system that can manage and distribute the water in urban areas. Also, the government needs to enhance its technology and investment in water treatment. Besides, we should ensure optimization at the planning level.
Solutions to Overcome this Problem
Water-free urinal- Urinal waste around 6 liters of water per flush that add up to 25 thousand liters per year. If a male member of the house stops using the flush then they can save lots of water.
Close the running tap- During dishwashing and hand washing people often let the tap running. These running taps waste thousands of liters of water per year. Besides, closing the tap will reduce this problem.
Replace dripping taps- In India it is commonly seen that most of the houses have one or two taps that drop water even when they are close. This running tap wastes up to 30,000 liters of water that nobody bothers to change. So, we should replace these taps immediately.
To conclude, water scarcity has become a more dangerous problem day by day. Also, due to our leniency that we haven’t taken the problem water scarcity seriously. But, now the authorities and people are working to resolve this problem so that our future generations do not have to buy this necessity.
URGENT!!!!!!!!-What is the carrying capacity of the graph?
OPTIONS:
4
6
13
20
Answer:
13
Explanation:
The carrying capacity is maximum amount of yeast that can exist in the environment, and the graph seems to table out at the 13 value.
Hurry please! I only have 2 minutes! Please fill the blanks for before, after, and during. NO websites or reported
before there is only 1 color. During there are two colors red on top of blue. Same for after. The state of matter is liquid the whole time.
Explanation:
Those are my observations
Pete, a male mouse with a pigmented coat (C, the dominant allele), was mated with Theresa, an albino female (c, the recessive allele). All six baby mice in the first litter had pigmented coats. For the next litter, Theresa was mated with Moe, who had a pigmented coat. Some of Theresa and Moe’s litter were albinos. What are the most probably genotypes for Pete, Theresa and Moe?
a
Pete = CC; Theresa = cc; Moe = Cc
b
Pete = CC, Theresa = Cc; Moe = Cc
c
Pete = Cc; Theresa = cc; Moe = Cc
d
Pete = Cc; Theresa = cc; Moe = cc
Each year jonahs dad puts out mum plants on each side of his front steps. An early frost hit prior to the plants entering a state of dormancy, and the mum plants died. What might explain why the plant died?
Answer: The plant died due to frost damage and desiccation
Explanation:
Plants may remain alive in an unfavorable condition for long periods without growing any further, but still have the power to grow under favourable conditions. Such plants are said to be in a state of DORMANCY. This is a gradual process that is made up of series of physical and physiological changes in the plant.
During unfavorable condition, such as in winter periods, scales form over buds to protect them from desiccating or drying out, and from the freezing temperatures. The occurance of these changes in plants are time bound. Therefore if there is change in the weather forecast leading to an EARLIER frost hit prior to the plant entering a state of dormancy, frost damage and desiccation may cause the death of the plant. Frost damage and desiccation occurs when there is lost of moisture from plants without it being able to replenish its water supply through its roots due to the dry air and winds.
As the plant wasn't able to enter the state of dormancy, it lost the opportunity to photosynthesize, grow and store more energy before settling in for the unfavorable season.
What does a cell do during mitosis?
Help please someone please what is the answer
Answer:
The answer is true.
Explanation:
Cuz that water be nasty.
Brainliest would be really really awesome!!!
The current world population is approximately seven billion people. Every person consumes resources in order to live. As the population continues to grow, how will this growth affect resources?
Answer:
they will run out
Explanation:
the resources are finite
what is a genomic change based on definition?
Answer:
Genome size can increase by duplication, insertion, or polyploidization. Recombination can lead to both DNA loss or gain. Genomes can also shrink because of deletions. ... It is beneficial to an organism to rid itself of non-essential genes because it makes replicating its DNA much faster and requires less energy.
Explanation:
The study of genes and their function. Genomics aims to understand the structure of the genome, including the mapping genes and sequencing the DNA
An organism's body weight is a balance between: the energy carried in the food we eat and the energy burned in digesting that food. the energy burned during growth, reproduction, and movement and the energy carried in the food we eat. the energy an organism spends on growth and the energy an organism invests in reproduction. the energy stored as lipids within the body and the energy burned during all activities. the energy carried in the food we eat and the energy burned by our basal metabolic rate.
Answer:
the energy burned during growth, reproduction, and movement and the energy carried in the food we eat.
Explanation:
A good health can be defined as the state of well-being in which all of the components of an individual's health are in balance. These state of well-being comprises of six (6) important components and they are; physical, spiritual, emotional, environmental, social and mental or intellectual. In order to have a good health, physicians and medical professionals advise individuals to engage in physical activity such as an aerobic exercise.
An aerobic exercise refers to all forms of physical activity that an individual engages in, in order to increase the heart rate (from low to high intensity) in response to the level of oxygen required by any activated or working muscle in the human body.
Some examples of aerobic exercise (cardiofitness activity) includes cycling, swimming, jogging, walking, skiing etc.
Generally, fitness experts usually advises everyone to judiciously engage in cardiofitness activities or exercises so as to improve well-being, body mass index (BMI), wellness or heart health.
Hence, the body weight of an organism is simply a balance between the energy burned during growth, reproduction, and movement and the energy carried in the food we eat.
This ultimately implies that, an organism's body weight is the difference between the energy that is taken in and the energy expended or burn throughout body activities.
What does the digestive system provide to cells that allows them to produce energy?
A The digestive system provides the cells with DNA and RNA.
B
The digestive system provides the cells with nutrients and sugars.
С
The digestive system provides the cells with hormones and metabolism.
D
The digestive system provides the cells with oxygen and carbon dioxide.
the answer is letter b
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Which of the following is the learned behavior conducted by animals in which the animal recognizes and follows the first thing it sees after birth?
A.) Imprinting
B.) Innate
C.) Conditioning
D.) Estivation
Answer:
A imprinting
Explanation:
MRK ME BRAINLIEST PLZZZZZZZZZZ
what structure is found outside of the cell membrane of a plant cell which gives the cell its strength and shape
Answer: the cell wall
Explanation:
Answer: the answer is cell wall
Explanation:
took the quiz and the assinment
How many atoms are In 2C2S3
Answer:
12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 1023).
Explanation:
A cell created by cloning is genetically...
Answer: c
Explanation:
12 The human muscular system can suffer injury or disease. Which of the following
is an example of a genetic disease that affects the muscular system?
A tendonitis
B muscular dystrophy
C a muscle strain
Da muscle tear
How would you classify this organism based on the dichotomous key?
Select one:
A. Kingdom Plantae
B. Viruses
C. Kingdom Eubacteria
D. Kingdom Protista
Answer:
Explanation:
3a b is your answer
Please help me answer this question
Answer:
35 Phyla
Explanation:
This is somewhat debated but the correct answer is 35 as this is the most agreed upon number and is closest to the alternate numbers
What do I write I need help on this and my teacher is not here
Answer:q
Explanation:
PLEASE PLEASE PLEASE HELP
Which is NOT one of the four fundamental forces in the universe?
Electromagnetism
Strong
Gravity
Mass
Answer:
Mass
Explanation:
From walking on the street, to launching a rocket into space, to sticking a magnet on your refrigerator, physical forces are acting all around us. But all the forces that we experience every day (and many that we don't realize we experience every day) can be whittled down to just four fundamental forces:
Gravity.
The weak force.
Electromagnetism.
The strong force.
These are called the four fundamental forces of nature, and they govern everything that happens in the universe.
PLEASE HELP NO LINKS
What is the electrical charge inside an axon during an Action Potential?
Positive or negative
Question 2
• The rabbit in this food
web would be
considered a:
• A. Decomposer
•B. Producer
C Secondary
Consumer
• D. Primary Consumer