Answer:
Sea otters, because of their eating habits, are considered a “keystone predator,” predators that keep the ecosystem balanced. ... When not enough otters are around to eat the sea urchins, the urchin colonies grow unchecked and “urchin barrens” increase.
Explanation:
Explain in a paragraph how speed and velocity impact blood splatter
Please no links!
Answer:
The force of the blood hitting a surface for medium velocity blood spatter is between 5 and 100 feet per second. This causes the droplets of blood to be smaller in diameter, and more like a spray. High velocity blood spatter: ... This causes the pattern of the blood to be similar to a fine spray.
Explanation:
Blood is a type of connective tissue.
A. True
B. False
Consider the following chemical reaction: Hb + O2 → HbO2 When this reaction is going from right to left, what process is occurring?
O a. oxygen unloading
O b. cellular respiration
O c. pulmonary ventilation
O d.oxygen loading
Answer: A, Oxygen Unloading
how do u get a perimeter of a rectangle?
Answer: All you have to do is add up all the sides
Explanation: Hope this helped you!!! Have a good day, and stay safe :)
Answer:
You would add all the sides
Explanation:
Area = multiplying 2 sides
Perimeter = adding up all the sides
so you would add all the sides of a rectangle
Hope this helped :)
Someone pls help!!?!
Explain half as conversion is expressed in human beings and how it relates to cut your groups and ethnicity
well when you cut the groups you cut them unto half and sorta related to ethnicity
An outer waxy, waterproof coating on plants.
Name the two different types of translatory motion and explain each in brief
26 POINTS!!!!!!!! | Which statement best describes trait distribution?
A.) Distribution describes how the variation in traits is spread across a population.
B.) Distribution describes the different traits that are found in a population.
C.) Distribution describes how individuals in a population are spread across their habitat.
D.) Distribution describes the different traits that are found in a species.
Answer: I think its b not sure though
Explanation:
have a great day :)
The statement which best describes trait distribution is: B. Distribution describes the different traits that are found in a population.
What is a trait?
A trait can be defined as a distinguishing quality, feature or characteristic that is possessed by a living organism and it differentiates from other species of organisms.
Generally, a trait is commonly transferred from the parent of a living organism to her offspring, so as to distinguish him or her from others.
The examples of traits:
In Genetics, some examples of traits include the following:
Colorblindness Curly hairHeight ComplexionOn a related note, a trait distribution refers to different traits that are possessed by a living organism found in a population.
In conclusion, trait distribution is described as different traits that are found in a population.
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The Gulf of Mexico dead zone is an area of hypoxic waters at the mouth of the Mississippi River. Its area varies in size, but can cover up to 6,000-7,000 square miles. The zone occurs between the inner and mid-continental shelf in the northern Gulf of Mexico, beginning at the Mississippi River delta and extending westward to the upper Texas coast. Thousands of farms are located along the Mississippi River and its tributaries and as water washes into the river after a heavy rain, it brings with it nutrients from fertilizers added to farmland. These materials flow downriver and eventually enter the Gulf of Mexico, where they create conditions for a dead zone: an area of low to no oxygen that results in the death of fish and other marine life. The Gulf of Mexico is a major source area for the seafood industry. The Gulf supplies 72% of U.S. harvested shrimp, 66% of harvested oysters, and 16% of commercial fish. Consequently, if the hypoxic zone continues or worsens, fishermen and coastal state economies will be greatly impacted. What can be done to minimize the Gulf dead zone? Choose ALL that could apply. A) Control of animal wastes so that they are not allowed to enter into waterways. B) Adjust the timing of fertilizer applications to limit runoff of excess nutrients from farmland. C) Monitor septic systems and sewage treatment facilities to reduce discharge of nutrients to surface water and groundwater. D) Restrict land use in the areas surrounding the Mississippi delta to exclude industrial sites. E) Counter the effects of fertilizers on algal growth in the Gulf with the use of chemical herbicides.
The things that should be done to minimize the Gulf dead zone include:
A. Control of animal wastes so that they are not allowed to enter into waterways. B. Adjust the timing of fertilizer applications to limit runoff of excess nutrients from farmland.E. Counter the effects of fertilizers on algal growth in the Gulf with the use of chemical herbicides.It should be noted that it's important to manage nutrients efficiently in farmlands through the restoration of wetlands in order to capture nutrients and then reduce runoff.
In order to minimize the Gulf dead zone, there should be control of animal wastes so that they are not allowed to enter into waterways. Also, there should be an adjustment of the timing of fertilizer applications to limit runoff of excess nutrients from farmland.
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Unicellular organisms are able to survive on their own because they have structures that have what important characteristic?
Answer:
A unicellular organisms depends upon its one cell for all the functions and survival of the organism. It has all the important characteristics that is necessary for its survival.
Explanation:
A unicellular organism is one which contains only one cell. And so all the life processes occurs in that one particular cell in an unicellular organism. A n unicellular organism is also called as the single cell organism.
The unicellular organisms uses cilia as well as the flagella to achieve locomotion by creating currents around and move about places. The take up nutrients by diffusion process. They reproduce asexually and produce their offspring.
(c) Based on the data, describe the time period during which Chlorella approximates exponential growth. Based on
the data and assuming logistic growth, describe the time period during which the Chlorella population has reached
the carrying capacity of the culture. Based the data, calculate the growth rate per day for the 5-day period with
the greatest growth rate.
Populations that experience a logistic growth model depend on the density and available resources. A) 5 - 10 days. B) 25 - 30 days. C) 0.27 x 10⁶cells/mL/day
What is the logistic growth model?In a logistic growth model, the population growth depends on density. Natality and mortality depend on the population size, meaning that there is no independence between population growth and population density.
When a population grows in a limited space, density rises gradually and eventually affects the multiplication rate. The population per capita growth rate decreases as population size increases.
The population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.
K is a constant that equals population size at the equilibrium point, in which the natality and the mortality rate get qual to each other.
Assuming that the population size is N, when
N<K, the population can still grow. N approximates to K, the population's growth speed decreases. N=K the population reaches equilibrium, N>K, the population must decrease in size because there are not enough resources to maintain that size.The sigmoid curve represents the logistic growth model.
In the example,
Between 0 and 5 days the population remains relatively stableBetween 5 and 10 days Chlorella approximates exponential growth.Between 10 and 20 days Chlorella experiences exponential growth. Between 20 and 25 days the population is near the K and decreases its growth rate.From 25 to 30 days, the population reached the equilibrium point, and got to stabilize.Time period during which Chlorella,
A) approximates exponential growth ⇒ Between 5 and 10 days
Between 10 and 20 days its already exponential growth.
B) has reached the carrying capacity of the culture ⇒ 25 to 30 days
Finally,
C) Growth rate per day for the 5-day period with the greatest growth rate.
First we need to figure out during which period Chlorella experiences the greatest growth rate. To do it, we just need to make the following substraction,
Growth rate per period = final concentration - initial concentration
Period 0-5 ⇒ 0.08 - 0.01 = 0.07Period 5-10 ⇒ 0.55 - 0.08 = 0.47Period 10-15 ⇒ 1.9 - 0.55 = 1.35Period 15-20 ⇒ 2.8 - 1.9 = 0.9Period 20-25 ⇒ 3.2 - 2.8 = 0.4Period 25-30 ⇒ 3.2 - 3.2 = 0Now we know that during the period from 10 to 15 days, the population experienced its greatest growth rate. But this rate is acchieved in 5 days. Now we need to find out the growth rate per day. So all we need to do, is to divide the result of the substraction per 5 days,
1.35 x 10⁶ / 5 days = 0.27 x 10⁶ cells/mL/day
The answer is 0.27 x 10⁶ cells/mL/day
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?????????? helppppppppp
Answer:
Nuclear Energy from uranium is non-renewable
Hydrogen from water is renewable
Wind energy from air is renewable
Solar energy from the Sun is renewable
Fossil fuel from coal is non-renewable
Explanation:
Energy resources refers to those materials or items from which energy can be derived. Energy resources are generally classified into renewable and non renewable energy resources.
Renewable energy resources are those types of resources which can be renewed or replenished as they are being used up. Renewable energy is often referred to as clean energy and comes from natural sources or processes. Examples of these renewable energy resources are energy from wind, water and sunlight.
Non-renewable energy resources are those types of resources which are not easily renewed or replenished as they are being used up. Examples include energy from fossil fuels such as petroleum and natural gas, coal, nuclear energy from radioactive materials, etc.
From the given table:
Nuclear Energy from uranium is non-renewable
Hydrogen from water is renewable
Wind energy from air is renewable
Solar energy from the Sun is renewable
Fossil fuel from coal is non-renewable
distinguish between active and passive immunity
Answer:While active immunity occurs when an individual produces antibodies to a disease through his or her own immune system, passive immunity is provided when a person is given antibodies.
Explanation:
Please help me please
Answer:
index fossils are fossils used to identify different geological periods of time. they are important for scientists to understand the time frame of which they're collecting strata from. criteria that make thes fossils are being easy to recognize, large in number and size
Energy Efficiency =
Useful Energy Output/Total Energy
Input x 100 (%)
If a power plant uses 100 units of
energy to create electricity and the
output is 5 units, where does the
95% of the energy input go?
A. lost as heat
B. lost as gas
C. escapes the system as potential energy
If a power plant uses 100 units of energy to create electricity and the output is 5 units, 95% of the energy input goes as lost as heat.
Could you ever create a machine where 100% of the input energy would turn into output energy?No, a real machine can't have an efficiency of 100%. An efficiency of 100% means that there is no loss and the output energy (or work) of the machine is equal to input energy (or work). In real machines, there is always some loss of energy to overcome friction and air resistance.
How do you calculate the energy efficiency of a power plant?To express the efficiency of a generator or power plant as a percentage, divide the equivalent Btu content of a kWh of electricity (3,412 Btu) by the heat rate. For example, if the heat rate is 10,500 Btu, the efficiency is 33%. If the heat rate is 7,500 Btu, the efficiency is 45%.
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describe how ingestion of very salty food may reduce the amount of water excreted in urine
A forest has many trees and bushes that produce nuts. This is a major food sources for many species, including a particular bird. Birds of this species have a variety of beak shapes ranging from long and pointy to short and hard beaks. The birds with short and hard beaks are able to eat the nuts better than the birds with long and pointy beaks. According to this scenario and the principles of natural selection what will happen to this bird population over time. Group of answer choices
Answer:
There are four principles at work in evolution—variation, inheritance, selection and time. These are considered the components of the evolutionary mechanism of natural selection. After a while the birds will get old and their beaks will get weaker, eventually they will die, when there is a shortage of food they will start harming each other in order for it, that’s selection.
Explanation:
How does the structure of DNA allow the right protein to be made?
Answer: Structure of DNA: double-stranded helix held by complementary base pairs. DNA carries the genetic information for making proteins. The four bases A, T, C and G make up the genetic code. The base sequence determines amino acid sequence in protein.
Explanation:
Natural selection leads to adaptations to __________ in an organism's environment. View Available Hint(s) Hint 1.opened hint Consider the features of the environment that affect organisms' existence. Natural selection leads to adaptations to __________ in an organism's environment. nonliving factors such as temperature and chemicals other living organisms abiotic and biotic factors water for aquatic organisms and the atmosphere for terrestrial organisms
Answer:
abiotic and biotic factors
Explanation:
According to the evolutionary theory proposed by Darwin, natural selection can be defined as the mechanism by which evolution occurs (i.e., the mechanism by which species change over time). An organism´s environment is comprised of abiotic (e.g., temperature, light, water, etc) and biotic (e.g., microbes, food availability, etc) factors. Adaptations refer to the phenotypic traits that increase the chance of survival and reproduction of an organism in its environment. Organisms better adapted to their environment are selected by natural selection to reproduce and thus perpetuate their genes across generations.
How do humans influence the availability of renewable and non-renewable resources
on earth?
Please provide an example in your explanation.
Answer:
Humans use up many nonrenewable reacources every day, alongside renewable ones. One example of such is oil, oil takes millions of years to form, much longer than the amount of time it takes for us to use it up.
Explanation:
Hope this was helpful! :)
Decomposers (like bacteria and fungi) are not included in this food web. Explain the role of decomposers in nature. Why are they so important?
I NEED HELP WITH THIS PLEASE!!!!
Answer:
please give me brainlist and follow
Explanation:
Thanks to decomposers, nutrients get added back to the soil or water, so the producers can use them to grow and reproduce. Most decomposers are microscopic organisms, including protozoa and bacteria. ... Instead, fungi get all their nutrients from dead materials that they break down with special enzymes.
Which of the following are true about the Cambrian explosion?
Fossil evidence is found in the evaporites in Texas
A diversity of different phyla with huge anatomical differences all appear at once in the fossil record
Fossil evidence is found in the Burgess Shale
provides evidence for many transitional species with very little anatomical difference
Marks the beginning of the Paleozoic era
It marks the beginning of the Cambrian period
Answer:
b I think but I am not sure but have a good day
Use the image below to answer items a and b.
The cells in this image of the microscope's field of view are most likely from a(n) ?
Α - bacterium
B - plant
C - protist
D - fungus
Answer:
A
Explanation:
i go with A is that okay?
huh
Compare cladistics with Linnaeus's classification
The ___the contour lines are
together the steeper the slope.
The steeper the slope, the ___ stream's velocity.
Answer:
hi
Explanation:
7. During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus,
if a portion of the original strand is CAGGTTACG, then the new strand will be
a. CAGGTTACG.
c. GTCCAATGC.
b. GTCCTTAGC.
d. GTCCTTACG.
Answer:
i think its b i took the test but i forgot the answer
Explanation:
Evidence for Evolution:Quesuull The hip bone in whales, the leg bone in snakes, and the appendix in humans are examples of:
Answer:
The correct answer is - vestigial structures or organs.
Explanation:
Vestigial organs are structures or the organs are body parts that had once important function but now have no apparent function. These are body parts that look like these are residual parts from a past ancestor.
The hip bone in whales, the leg bone in snakes, and the appendix in humans are thought to have once important functions but now have no apparent function and are vestigial organs.
Which of the following pollutants is used in agriculture and landscaping and might cause nerve damage, birth defects and cancer in humans?
A. particulate matter
B. lead
C. pesticides
D. bacteria
Other:
Answer: pesticides
Explanation:
You list three places/examples of how ATP is used
Answer: places- ATP hydrolysis provides the energy needed for many essential processes in organisms and cells. These include intracellular signaling, DNA and RNA synthesis, Purinergic signaling, synaptic signaling, active transport, and muscle contraction. examples- ATP is used to build large molecules such as proteins, to temporarily store energy in the form of fat, and to allow for all types of cellular transport. brainliest
Explanation:
what can cause a decrease in soil quality of farm land that is left without crops during some months every year
Answer:
Let the land lie fallow for a season
Explanation:
In Agriculture when a farmer has some problems with the quality of his soil due to continued planting all year round without allowing the soil rest, there seems to be loss of some of the nutrients that help crops grow and he is unable to grow crops on his field.
The best option is to allow the land low fallow with grasses and other plants growing and replenishing the soil.