Why Pcb have lasting effect than nitrate in the aquatic habitat.
PCB bind to soil and other particles in the water but only small amounts will dissolve in water. Small concentrations of PCBs can also evaporate and be carried long distances in the air. PCB stay longer in the soil and sediments more than nitrate.
When PCB is inside the ocean or aquatic environment,the fish or water organisms will absorb it from the water and sediments in their habitat. Too much accumulation of it can lead to their death and when such aquatic organisms are consumed, it will prone bad health to humans and even foetus. Over accumulation of PCB will affect the heat of individual.
What is PCB?PCB or polychlorinated biphenyls refer to highly toxic and concentrated industrial substances. They pose serious health challenges to fetuses, babies and children and this can lead to developmental and neurological problems from continuous exposure to PCB
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A river has historically had a large population of wetland grasses growing near the shore. Which statement describes the most likely long-term effect of introducing an aggressive, nonnative aquatic plant species into the river?.
Answer:
The grasses will adapt to live on dryer soil.
Explanation:
The statement describes the most likely long-term effect of introducing an aggressive, nonnative aquatic plant species into the river is the grasses will adapt to live on dryer soil.
What is nonnative species?The nonnative species also known as non-indigenous species. The any species which is not found in ecosystem is called nonnative species. The species introduced naturally and not by human agency.The non-native species that causes harm to the environment or ecosystem is called invasive species.
The most likely effect these nonnative flathead catfish could have on the ecology of the Yadkin river is that they could cause a decline in the population of native fish species that they prey on.
Nonnative refers to any species that is not native to a particular area or ecosystem. Nonnative species can be referred to as exotic, alien, or introduced species.
Therefore, The statement describes the most likely long-term effect of introducing an aggressive, nonnative aquatic plant species into the river is the grasses will adapt to live on dryer soil.
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Glucose is a molecule that can move across the cell membrane. If the
concentration of glucose is higher outside the cell than inside the cell, then
what will happen by the process of diffusion?
A. Glucose molecules will stay where they are.
B. Glucose molecules will disappear by diffusion.
C. Glucose molecules will diffuse into the cell.
D Glucose molecules will diffuse out of the cell.
Answer
B) Glucose molecules will diffuse out of the cell.
If you were riding in a car down a city street, which frame of reference would not allow
you to detect that the car was moving?
the driver of the car
buildings along the street
O traffic lights at intersections
O cars parked on the sides of the street
Answer:
Driver
Explanation:
You can't tell if the car is moving by looking at the driver as they are in the car with you
Wetlands help reduce erosion through _______. A. Nutrient absorption b. Sediment trapping c. Bacterial absorption d. All of the above Please select the best answer from the choices provided A B C D.
Answer:
it is d that's my answer to the question
What is the best replacement for the underlined word in the sentence below: The glucose in fruit can help give you energy. a. Vitamins c. Juice b. Sugar d. Protein
Answer: Sugar
Explanation: Fruits contain two types of sugars: fructose and glucose. Glucose raises blood sugar so id say your answer Is Sugar.
Something that causes plants and animals to respond to their environments is a called a(n)
a. stimulus b. imprinting
c. migration d. reflex
The brilliant colors of leaves in the fall are the result of
Answer:
Chlorophyll breaks down
Explanation:
However, as the length of daylight and temperature change in the fall, the leaves' food-making activity comes to a halt. The chlorophyll degrades, the green hue fades, and the yellow to orange colors emerge, contributing to the leaves' fall brilliance.
NO LINKS AND NO FAKE ANSWERS. Tony has a mass of 50 kg, and his friend Sam has a mass of 45 kg. Assume that both friends push off on their rollerblades with the same force. Explain which boy will have greater acceleration.
Answer:
Sam, he weighs less, so he accelerates faster
what do you notice about the number of carbons hydrogens and oxygens in the reactants compared to the product?
Answer:
to answer this question, we need to know the chemical reaction so u should write it or attach it.
The first scientist to perform multiple tests on the transforming principle, to determine if it was DNA or protein
Griffith
Chargraff
Avery
Hershey
Land that links protected habitat and allows the movement of wildlife between them to sustain genetic and species diversity is a(n):
Answer:
habitat corridor
Explanation:
What is the compound found in raspberries that plays a role in our solar cell.
Answer:
Anthocyanin. This is also found in blackberries, and is used to absorb light, as these fruits may need extra light sometimes to survive.
Anthocyanin is a pigment or compound found in raspberries that plays a key role in the solar cells.
What is Anthocyanin?Anthocyanins are a group of antioxidants which are found in red, blue, and purple fruits and veggies majorly. A diet which is rich in these compounds may help in preventing inflammation and protect the organism against type 2 diabetes, cancer, and heart disease. Regularly eating anthocyanin-rich foods or diet may also benefit the individual with good memory as well as overall brain health.
The organic solar cell is made for the purpose of research in the laboratories which uses the pigment anthocyanin, an organic compound extracted from the plants, such as blackberries and raspberries, that absorbs light energy from the Sun.
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A virus is made of a protein shell that carries
DNA. Which statement best describes how
the virus can be classified according to cell
theory?
Answer:
it is classified as non living or a prokeriote.
Explanation:
If God exists and He (or She) revealed themselves, would people accept God as God? NO LINKS
Answer:
First of God is a He, God the Father, he already revealed himself through Jesus Christ. Some accepted Jesus as God and some didn't. Even IF there was another sign, some would still not accept it because they are too material and this world doesn't want people to accept a higher being as all holy and powerful.
why it is important for a cell to be able to differentiate?
Answer:
they are able to perform a specialized function in the body
how is the phloem is adapted to its function
Answer:
The cells that make up the phloem are adapted to their function: Sieve tubes - specialised for transport and have no nuclei
Explanation:
I hope this is right
is urbanization density dependent or density independent
Answer:
urbanization is dependent factor ig
Sorry to bother you guys again but I need help with this one too
Answer:
endoplasmic reticulum(ER)
Explanation:
b/c for making proteins use to endoplasmic reticulum or (ER).
12. A farmer is struggling to control the population of a certain insect on his farm. After researching population control techniques, he discovers that a particular bird is a predator of this insect. The farmer purchases a number of these birds and releases them onto his farm. How might the farmer's action most likely have a negative impact on the ecosystem
The farmer's action most likely have a negative impact on the ecosystem because may be there is no predator or controlling agent of that bird.
Why introduction of new bird cause problem?We know that one organism is responsible for controlling the population of other organism so if such type of controlling agent is present, the organism grow rapidly and can harm the whole ecosystem.
So we can conclude that farmer's action have a negative impact on the ecosystem due to presence of no predator or controlling agent of that bird.
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Answer: the birds will consume beneficial insects along with the pest species.
Explanation:
hello humans ~
_______ are the agents that act as carriers of a pathogen and spread diseases.
Vectors
Microbes
Parasites
DNA
Explanation:
I think the answer is parasites
How are the terms ovum, zygote, and embryo related?
Answer:
ovum fusing with sperm will give zygote (fertilization)
The zygote later on develops to an embryo in the womb after implantation.
The biological levels of organization range from a single cell all the way up to the biosphere in a highly structured hierarchy. The biological hierarchy includes: cells, tissues, Organs, organ systems, and organisms. Consider each of the pairs shown below select all that correctly paired the level with an appropriate example.
A) organ: heart
B) cell: neuron
C) tissue: blood
D) organ: muscle
E) organ system: small & large intestines, stomach, pancreas, gall bladder
Answer:
B) Tissue is made of different types of cells.
D) Organs are made of different types of tissue.
Explanation:
The tissues are made of different types of cells. The organs are also made of different types of tissue. There is no need of same types of tissues to make organs. Thus, option (B) and (D) is correct answer.
Which characteristics of wombats is most likely an adaptation for attracting mates?
A.muscular legs and shoulders
B. thick brown fur
C. a pouch with milk glands
D. dropping with unique smell
Answer:
D
Explanation:
Environmental degradation is a consequence of previous technological advances. please select the best answer from the choices provided t f
Answer:
T
Explanation:
Based on ypur question i think thats it
I found the question online
Environmental degradation is a consequence of previous technological advances is true statement.
What is Environmental degradation?Environmental degradation is the deterioration of the environment as a result of resource depletion, including poor soil, water, and air quality, ecosystem disruption, habitat loss, the extinction of wildlife, and pollution.
Any alteration or disturbance to the environment that is deemed harmful or undesirable is what is meant by this definition.
The detrimental impacts of any human activity on the environment are referred to as environmental concerns. Both the biological and physical aspects of the environment are considered. Air pollution, water pollution, natural environment pollution, trash pollution, and other major environmental issues are among the major causes of considerable concern.
Therefore, Environmental degradation is a consequence of previous technological advances is true statement.
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Give two reasons why earthworms are nocturnal
Answer/Explanation:
Nocturnal ⇒ occurring or active at night
Reason 1; During the day earthworms mostly stay in their burrows underground
Reason 2; At night they come up on to the surface to feed
Knowing that; They have receptor cells in their skin that are sensitive to light and touch. Worms breathe through their skin. It's imperative for them to stay cool and moist in order to continue breathing. If they came out during the day the sun would dry them out and they would not be able to breathe.
~Lenvy~
In conditioning, during the sequence of delaying the stimulus, the dogs often displayed____ anxiety or excitement
In conditioning, during the sequence of delaying the stimulus, the dogs often displayed anticipatory anxiety or excitement. Therefore, the correct option is (C).
During the sequence of conditioning, as the stimulus is delayed, dogs often display anticipatory anxiety or excitement. This phenomenon is known as the "anticipatory response" and is a form of classical conditioning. The dogs have learned to associate the delayed stimulus (e.g., the sound of a bell) with the upcoming reward or punishment. As a result, they exhibit a conditioned response, expressing their anticipation of the outcome even before the actual stimulus is presented.This anticipatory response is a crucial aspect of classical conditioning, demonstrating the learned association between the conditioned stimulus (the bell) and the unconditioned stimulus (the reward or punishment). It reflects the dog's ability to predict the forthcoming event based on their prior experiences and conditioning history.Therefore, the correct option is (C).
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Question:
In conditioning, during the sequence of delaying the stimulus, the dogs often displayed____ anxiety or excitement
A) negative
B) zero
C) anticipatory
What type of molecule is doing the "work" in the picture
Answer:
where is the picture at?
this list contains both characteristics and components of some nucleic acids 1.Single stranded 2. Deoxyribose 3. Ribose 4. Uracil 5. Thymine 6. Adenine 7. Phosphate group 8. Hydrogen bonds which of these characteristics and components of DNA?
Answer:
Explanation:
1,2,3,4,5.6,7,8
1 In the chemical equation: C + O2 -> C.O2, CO2 is
Answer:
1 carbon 2 oxygen?
Explanation:
hope this helps, i dont exactly understand the context of the question, also ask in Chemistry next time
Answer:
carbon dioxide???? I think that's the answer.
Explanation:
When multiple transitional fossils are found in many rock layers, they provide evidence of —
A) seasonal variation in the diet of a species
B) gradual change of a species over time
C) DNA functioning as the genetic material of organisms
D) an unchanging environment
Answer:
your Answer is B:)
Explanation:
When multiple transitional fossils are found in many rock layers, they provide evidence of the gradual change of a species over time.
What do you mean by Fossils?Fossils may be defined as the preserved remains, or traces of remains, of ancient organisms. They are dead and organic remains of past organisms.
Transitional fossils are fossils that exhibit characteristics of both ancestral and derived forms During the past 30 years, new discoveries and reinvestigations of long-forgotten specimens have coalesced into a flood of transitional fossils.
Therefore, when multiple transitional fossils are found in many rock layers, they provide evidence of the gradual change of a species over time.
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