Why do think predatory animals like owls are often threatened in habitats that have been exposed to those chemicals?
Answer:
At each higher level of consumption, the amount of toxin is magnified.
Explanation:
Those predators all eat smaller secondary consumers, and those secondary consumers eat the primary consumers, which a lot of the times are exposed to DDT. For example bugs are often the primary target for DDT, once those bugs are exposed to the DDT they carry it in/with them. When a fish eats the bug, that fish is now exposed to the DDT. When the fish is caught and eaten by an eagle that eagle and its young are now being exposed to DDT. The DDT might not effect the full grown eagle for its lifetime but it does effect its young.
Predatory animals like owls are often threatened in habitats that have a more complex chemical composition due to the biomagnification and bioaccumulation of toxic substances in their bodies.
What is biomagnification?There are producers, consumers ,and decomposers are present in the food chain. The food chain starts with the producers, such as terrestrial plants, phytoplankton, herbs, etc.
The producer makes the food by photosynthesis, and this food is taken by the consumer. From the primary consumer/ herbivore, the energy and nutrients pass to the secondary consumer, and then to the tertiary consumer. After the deaths of the producer and consumer, they are decomposed by the decomposer.
If in an ecosystem there are chemicals present, then the chemicals attach to the plants' leaves and are consumed by the herbivores. The carnivores feed on herbivores, and the toxic material present in the herbivores is passed down to the carnivores. As a result, the toxic chemicals in the carnivores accumulate over time. This is called biomagnification. The owl is a carnivore that feeds upon the insect, so the magnification is seen.
Hence, the owl is threatened due to biomagnification.
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A group of herbivores is separated from their population. In the new environment, the only edible vegetation grows at the tops of trees. Which of the following is a likely physical adaptation that may develop over time?
A.
A long neck is an adaptation that will develop over time allowing the herbivores to more easily access food.
B.
A long neck is an adaptation that will develop over time allowing the herbivores to more easily see their prey from far away.
C.
Shorter legs is an adaptation that will develop over time allowing the herbivores to more easily find food.
D.
Striped fur is an adaptation that will develop over time allowing the herbivores to stay warm in the cold winters.
Answer:
C
Explanation:
Animals need food to survive and if they cant reach it, they will die and the other taller can reach the food and the weaker die off and the stronger, and taller will grow to pass it traits to others. hope this helps :)
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The pancreas produces insulin in order to control levels of
in the body.
O A. blood sugar
OB. antibodies
O c. platelets
OD. hormones
Answer:
I'm pretty sure blood sugar. I dont know for sure so.
How is the cell's ability to get materials in and out of the cell affected by a cell's growth?
Answer:
as a cell grows its volume increases and the cell membrane expands. The volume increases faster than the surface area so the amount of surface area available to pass materials decreases
Explanation:
Two types of cells are shown below. What molecules are sent to from Cell A
to cells in B in order for the muscle to move? *
Answer:
ATP.
Explanation:
ATP molecules are sent from cell A to cell B in order for the muscle to move because muscle movement requires energy. Beside ATP, NADH, FADH2, and creatine phosphate are the molecules that are needed for the movement of muscles. The ATP molecules is broken down into ADP + phosphate ion in which phosphate ion is used as energy to move muscles of the body so we can say that cell A send ATP molecules to cell B.
Which new animal adaptation may be favored if average
temperatures in a temperate forest decreases by 25
degrees C over 1500 years?
Answer:
If the average temperatures of temperate forests fell by about 25ºC during the period of 1500 years, the natural modification of the animals that would be favored would be that which allows an adaptation to the new climatic circumstances by the fauna of said forests, that is , to the notable drop in temperature. Thus, for example, animals would develop more voluminous furs, which would allow them to heat their bodies in a better way.
Which of the following is true about populations of the same species living in different
places?
Answer:
What's the following?
Explanation:
PLEASE ANSWERR
Which of the following is the independent variable for a controlled experiment
investigating how waste production affects a certain person's ecological
footprint?
A. Opinion the person has about environmental impact
B. Measurement of the amount of waste produced
C. Identification of the person
D. Calculation of resulting ecological footprint
Answer: Measurement of the amount of waste produced.
Explanation:
Measurement of the amount of waste produced is the independent variable for a controlled experiment in this case. Therefore, the correct statement is option B.
What is the independent variable?The independent variable is the variable that can be changed in a controlled experiment. In this case, the researcher can manipulate the amount of waste produced followed by observation of its effect on the ecological footprint.
The researcher can manipulate the amount of waste by changing the factors such as the type of waste produced, recycling facilities available, etc. under controlled conditions.
Once the independent variable is manipulated, the researcher can observe its effect on the dependent variable. In this case, the ecological footprint of the individual is a dependent variable. The dependent variable is the variable that can be affected by the independent variable and is measurable.
Therefore, the measurement of the amount of waste produced is the independent variable for a controlled experiment.
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Wave A completes 4 cycles in 2 seconds. Wave B completes 6 cycles in 1 second. Which wave, A or B, has the higher frequency?
Answer:
Explanation:
Wave B
An orange tree is an example of a_________ because it contains seeds in fruit.
Answer:
angiosperm
Explanation:
The angiosperm plant have fruit and seeds inside the fruit
In which polymer does the monomer include a benzene ring?
Answer:
styrene
Explanation:
PLS HELP ASAP
Which of the following is a renewable energy source?
A) sun
B) water
C) wind
D) biomass
E) all of the above
An elderly woman finds that her back hurts almost all the time. Her doctor tells her it is because she has osteoporosis. Why might a disease that causes her bones to thin make her back hurt?
A) The bones of her vertebrae have lost calcium and crumbled enough to begin pinching the nerves leaving her spinal cord.
B) The muscles in her back are slowly destroyed as the bones of her vertebrae get thinner and collapse.
C) The motor neurons inside the bones of her vertebrae send pain messages to her brain as the bone dissolves.
D) Her bones cannot support her skin and muscles adequately, and so the muscles cramp and hurt.
Answer:
I think no b is the right answer
Answer:
the answer is a
Explanation:
Researchers Robert Briggs and Thomas King used ultraviolet radiation to destroy the nuclear DNA of frog eggs. Nuclei from adult skin cells and from tadpole-gut epithelial cells were cultured and then injected into eggs that had their nuclei destroyed. The results were tadpoles. Which conclusion is supported by the data from this investigation?
Answer:
Nuclei of gametes and somatic cells are similar to each other in its function.
Explanation:
The conclusion of the data is that the nuclei of gametes and somatic cells are similar to each other because both performs same function in the cell i.e. regulates activities of the cell. The nuclei of somatic or skin cells work efficiently in the egg cells due to similar composition and structure of nuclei that performs similar function in the cell so that's why injection of skin cell's nuclei into egg cells results the same i.e. formation of tadpoles.
Manatees are endangered marine mammals native to Florida. They eat seagrass that grows in the water, migrate from summer habitats to winter habitats, and look for safe areas to feed and raise their young. People in boats need to give space to manatees to protect them from harm. What might conservationists do to protect manatee populations?
increase the number of boats
increase the local fish population
increase the oxygen available in the water
increase the amount of protected habitat available
Answer:
i am pretty sure it is D
Explanation:
if im wrong i am really sorry
The conservationists must do the following in order to protect the population of Manatees:
Increase the amount of protected habitat available.Thus, the correct option for this question is D.
What is Habitat?Habitat may be defined as a type of natural environment for which a particular species is best adapted due to natural selection. It may also be characterized as the area where the basic demands of an organism are fulfilled like food, space, mating partner, etc.
Manatees usually prefer wet and moist environmental conditions. This is because they eat seagrass that grows in the water. In order to protect themselves from harsh conditions, they from summer habitats to winter habitats.
In response to this external behavior shown by Manatees, conservationists typically enhance the amount of such protected habitat that fulfills all the basic requirements of Manatees for their actual growth and survival. Such types of habitats increase the overall relative fitness of manatees.
Therefore, increasing the amount of protected habitat available must primarily be done by conservationists.
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The chromosome are arranged to show
ll
13
O A. homologous pairs
O B. tetrads
OC. independent assortment
O D. nucleotides
Answer:
D. nucleotides
i'm not sure
Can someone plz help me with this plz I beg u plz help me
Answer:
Rounded Rocks
Explanation:
Which of the following agricultural products requires the least amount of energy?
beef cattle
dairy cows
wheat
both (a) and (b)
A chemical company produced a genetically engineered potato called the New Leaf Superior. This plant produces a chemical that repels insects that might eat the plant. The offspring of the plant will also produce the chemical. What is one possible disadvantage of growing this type of potato?
A. The chemical will prevent insects from pollinating the plant.
B. The chemical might kill the plant, causing the soil to lie inactive.
C. The chemical might be harmful to humans when they eat the potato
D. The chemical will allow too many potatoes to grow, hurting crop yields.
A chemical company produced a genetically engineered potato called the New Leaf Superior, and one possible disadvantage of growing this type of potato is the chemical might be harmful to humans when they eat the potato that is in Option C.
What is the significance of genetically engineered foods?Genetically engineered foods are foods that have been artificially altered to be different from the wild type of the variety and have the potential to provide a variety of benefits, such as increased crop yields and pest resistance. They are also a great help in meeting the growing demand for food, but the ethics of genetically engineered foods are still in debate.
Hence, a chemical company produced a genetically engineered potato called the New Leaf Superior, and one possible disadvantage of growing this type of potato is the chemical might be harmful to humans when they eat the potato that is in Option C.
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Juniper is a desert plant that produces toxins. Unlike most animals, a type of rodent called Stephen's woodrat is able to eat juniper plants. The woodrat has special liver enzymes to metabolize juniper toxins. Which of the following statements best explains why the special liver enzymes became common in the woodrats? A. The enzymes allow the woodrats to grow much larger. B. The enzymes make the woodrats poisonous to their predators. C. The enzymes reduce the genetic diversity and variety of traits of the woodrats. D. The enzymes increase the ability of the woodrats to survive and pass on their genes.
Answer:
D.
Explanation:
Juniper becomes a food source for them as they gain the enzyme that digests it over many generations.
2. What does population density indicate?
Section E: Dispersion Patterns & Biotic Potential
1. Identify the type of dispersion pattern. (clumped, uniform, random)
A bunch of mushrooms growing on a rotting log.
b.
The sage plant secretes toxins, a chemical that kills off
surrounding plants in a circle around the individual sage plants.
Dandelions have wind-dispersed seeds that germinate
wherever they happen to fall in a favorable environment.
A herd of elephants gather around a watering hole.
2. Why do most organisms rarely reach their biotic potential?
c
d
where does the spindle fiber connect to the chromosome?
Answer: Hope This Helps!
Explanation:
Each half of the chromosome, the sister chromatids, has a granule located somewhere near the centromere. This is the kinetochore, and is the place where the spindle microtubules attach.
Answer:
Long protein fibers called microtubules extend from the centrioles in all possible directions, forming what is called a spindle. Some of the microtubules attach the poles to the chromosomes by connecting to protein complexes called kinetochores.
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Label the image with the type of plant used in the bouquet.
mass flower
filler flower
foliage
line flower
Carrying capacity is _____
A) The minimum population size of a species that the environment can sustain indefinitely, given food, habitat, water, and other resources available in the environment.
B) The maximum population size of a species that the environment can sustain indefinitely, given food, habitat, water, and other resources available in the environment.
C) a measurement of the population size of a species per a defined area
D) a pyramid-shaped model of relationships between organisms in a specific environment
Carrying capacity is B, The maximum population size of a species that the environment can sustain indefinitely, given food, habitat, water, and other resources available in the environment.
What is CARRYING CAPACITY?CARRYING CAPACITY, is a CAPACITY which means to hold something in this case the maximum in which an ecosystem or population can hold to CARRY out the function it needs.
Tus, option "B' is correct.
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help me please its easy i just don't pay attention
Answer:
Tall
-TT
-Tt
Short
-Tt
Explanation:
T is dominant
t is recessive if it's Tt that means it could be either.
If anyone has all the answers to The Universe Unit Review Practice please moment them
Answer:
C. a distant luminous object travels rapidly away from an observer.
Explanation:
Option C is the correct answer.
Redshift is actually observed when a distant luminous object travels rapidly away from an observer.
In redshift, observers actually see an object that is travelling away from them and it has longer wavelength. The opposite is the blueshift where observers see a light traveling towards them and shifted to shorter wavelength.
In astronomy, redshift takes place when the object's visible light travels towards the red end of the spectrum.
A red shift is observed when a luminous object is moving rapidly away from the observer.
A red shift refers to a shift to a longer wavelength. It is observed when a luminous object is moving away from an observer. This is different from a blue shift where the luminous object is moving towards the observer.
Hence, in astronomy, a red shift is observed when a luminous object is moving rapidly away from the observer.
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What experiment is left overnight what would be the observation fresh potato in sugar solution and water
Can someone help me answer this please
Answer:
first one is C and the second one is A
Explanation:
please mark brainliest
The movement of the Earth's tectonic plates creates extreme _____ below Earth's surface.
A. compaction
B. erosion
C. heat & pressure
D. explosions
The movement of the Earth's tectonic plates creates extreme heat and pressure below Earth's surface. So, the correct option is C.
What are Tectonic plates?A tectonic plate also known as a lithospheric plate is defined as a massive, irregularly shaped slab of solid rock that is composed of both continental and oceanic lithosphere. Plate sizes can vary greatly, ranging from a few hundred to thousands of kilometers across the Pacific where the Antarctic Plate being the largest.
Plate thickness also varies greatly, ranging from less than 15 km for young oceanic lithosphere to about 200 km or more for ancient continental lithosphere. The movement of the Earth's tectonic plates creates extreme heat and pressure below Earth's surface.
Therefore, the correct option is C.
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what is the timer for the increase in genetic variation that occurs when animals move into another population? Gene flow, sexual selection, natural selection, genetic disruption
Gene flow is the timer for the increase in genetic variation that occurs when animals move into another population.
What do you mean by gene flow?Gene flow is the transfer of genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalent allele frequencies.
Gene flow is the movement of genes into or out of a population. Such movement may be due to migration of individual organisms that reproduce in their new populations, or to the movement of gametes (e.g., as a consequence of pollen transfer among plants).
Gene flow is the transfer of genetic material from one population to another. Gene flow can take place between two populations of the same species through migration, and is mediated by reproduction and vertical gene transfer from parent to offspring.
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