Urchin barrens positively correlated with the presence of killer whales because it is is easier to find sea otters near the urchin barrens than in any other place in the sea.
An urchin barren is an area part of the ocean that is shallow, where the population growth of sea urchins has not been checked on leading to unlimited grazing of kelp forests. The kelp forests provide food and habitat for various species.
Sea otter populations have declined each year. In waters where killer whales cannot be able to go, sea otters have remained stable in numbers since they cannot be attacked. The role of sea Otters is to maintain the coastal kelp bed by controlling the sea urchin population which grazes on kelp.
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examples of invasive species to the united states include all but . answer burmese python to the florida everglades cheatgrass to the western united states red-cockaded woodpecker to the southeastern united states lionfish to the caribbean
The species that is not invasive to the United States is the red-cockaded woodpecker to the southeastern United States.
Invasive species are native or non-native species that widely affect habitats and cause environmental damage, economic loss, or harm to humans. The cause of a species becomes invasive due to competition in obtaining food with other species. One way to grow and reproduce as quickly as possible.
Invasive species pose a major threat to biodiversity because they can starve native or other species of food and slowly disappear. The following are some examples of invasive species in the United States: Burmese python, lionfish, and cheatgrass.
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manx cats are tailless and when crossed with one another produce on average 1 long-tailed (wild type) cat for every 2 manx. the m (manx) allele is lethal in homozygous condition due to problems arising during development. thus, a mm genotype is lethal, a mm cat is manx (tailless), whereas a mm cat is wild type with a long tail. a population is composed of manx and wild-type cats in a 2 manx: 3 wild-type ratio. the cats randomly mate and reproduce f1 progeny. what is the frequency of m allele of the f1 generation?
The frequency of the m allele of the f1 progeny is going to be 3/4.
Here, it has been mentioned in the question that the M allele is lethal, which then means that a MM genotype is going to be lethal. For an offspring to be tailless, it needs to have the genotype mm. And a wild-type cat has the genotype Mm.
It has also been given that in the population, the Manx cats and wild cats live in a ratio of 2:3. On average, 1 long-tailed cat is there for every 2 Manx. Now, after the f1 generation is produced, the genotypes are going to be - (MM, Mm, Mm, mm).
Since we know that there are 2 Manx cats (mm) for every long-tailed one (Mm), the frequency of the m allele is going to be 3/4.
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The signature animal morphological feature called the __________ is found in rotifers and aids in feeding.
The signature animal morphological feature called the corona
in most species of rotifers, the head carries a corona which is a crown of cilia that draws a vortex of water into the mouth which the animal sifts for food
The rotifers obtain food that is directed toward the mouth by the current created from the movement of the corona, the food particles travel to the mastax and further the food passes by digestive and salivary glands into the stomach and then into the intestines
the rotifer's movements are by the circular arrangement of moving cilia at the front which rotates
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QUESTION 25/26 PLEASE ILL GIVE BRAINLIEST
Examine the diagram to below and the trend seen by the two lines. Global temperature has been closely linked with
the buildup of CO2 in the atmosphere. Which of the following statements is most likely true based on the graph?
A. Since 1880, carbon dioxide has caused a
temperature increase of 10° Fahrenheit.
B. Since 1880, adding carbon dioxide has
caused the global temperature to decline.
C. Since 1880, carbon dioxide has caused the
temperature to increase by about 1.2 degrees.
D. Since 1880, carbon dioxide has no effect on
the global temperature.
26. According to the same graph to the right,
A. From 1900 to 1950, the average global
temperature constantly increased.
B. The concentration of CO2 in the atmosphere
increased at a constant rate from 1920 to
1980.
C. The concentration of CO2 and the temperature
were the same in 1880.
D. CO2 in the atmosphere and temperature have
increased at the same rate since 1930.
Answer: the answer is C
Since 1880, carbon dioxide has caused thetemperature to increase by about 1.2 degrees.
Explanation:
Which events are likely to be catastrophic to an ecosystem? select the three correct answers.
Volcanic eruption, an oil spill, and the introduction of a species that reproduce quickly are the likely events to be catastrophic to an ecosystem.
So, the correct options are A, B &E.
The activities of both plants and animals in a specific ecosystem will be disrupted by a volcanic eruption, which will result in the loss of habitation. A whole ecosystem might be completely wiped out depending on the size of the volcanic explosion. The aquatic ecology is seriously harmed by an oil leak, which also causes the demise of aquatic life.
An ecosystem will quickly become dominated by a species that reproduces quickly, to the detriment of other species, if that species is introduced. Catastrophic occurrences are those that have the potential to seriously harm the ecosystem. The ecosystem is severely harmed by hurricanes, tropical cyclones, tsunamis, and numerous destructive tidal waves.
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The given question is incomplete. So, the complete question is:
Which events are likely to be catastrophic to an ecosystem? (Select three correct answers)
A. A volcanic eruption
B. An oil spill
C. Leaves changing color in the fall
D. The average annual melting of snow
E. The introduction of a species that reproduces quickly
last year, dr. thomas used hydrogen peroxide to clean the spot where he planned to administer a vaccination shot to serena. which of the following processes accounts for the fact that serena now becomes fearful every time she sees hydrogen peroxide?
Serena's fear of hydrogen peroxide is an example of a classical conditioning in Psychology.
Classical conditioning is a form of associative learning that happens unconsciously as your response are automatically conditioned by giving a specific stimulus. In this case, the otherwise neutral object such as hydrogen peroxide, being used to clean the spot where the doctor administered a vaccination shot using needle which caused pain are causing Serena to negatively associate hydrogen peroxide with pain and therefore resulting in her fear towards hydrogen peroxide.
Classical conditioning is often called Pavlovian conditioning since it was first experimented and discovered by Russian psychologist Ivan Petrovich Pavlov, and in the classical conditioning experiment, Pavlov would ring a bell whenever he was about to feed the dogs causing the dogs to salivate in excitement of the food, and having done so a few times, Pavlov noticed that the dogs would automatically salivate upon hearing the bell even without any food given.
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A dark -colored wall becomes warm when the sun shines on it after sunset , a person standing a meter away can feel warmth from the wall how does heat transfer from the wall to the person
When the sun shines on a black wall after dusk, the wall gets warm; someone standing one meter away may feel the warmth. The heat transfer from the wall to the person through - radiation.
Heat transfer is any or all of a variety of processes that are thought to function as mechanisms to move entropy and energy from one place to another. Common names for the specific mechanisms include convection, heat radiation, and conduction. Three processes of heat transfer are —radiation, conduction, and convection -into and through the atmosphere.
Radiation is the electromagnetic transmission of heat energy through space.
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Each time a fatty acid bonded to the glycerol molecule, you should have -H and an O-H left over. What molecule
does these left-over atoms bind together to create?
Each time a fatty acid is bonded to the glycerol molecule the leftover atoms -H and -OH bind together and create a water molecule i.e H₂O molecule.
What are Fatty Acids?
A fatty acid is a carboxylic acid having an aliphatic chain that is either saturated or unsaturated.
Fatty acids are the building blocks of fat in our bodies and our meals. The body converts lipids into fatty acids during digestion, which can subsequently be absorbed into circulation. Fatty acid molecules are typically joined in groups of three to form a molecule known as a triglyceride.
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Help with #12 please
Answer:
See explanation (i am not sure for g and h)
Explanation:
a.) Cartilage - Soft flimsy bone provided at birth. Acts as a buffer between bones
b.) Blood Vessels - Covers the surface of the bone, this aids in repairs and injuries. Carries blood to other parts of the body.
c.) Osteoblasts - Type of cell capable of migrating and depositing new bone. Builds bone.
d.) Osteocytes - Osteoblasts that become trapped in the construction of bone; also known as a living bone cell
e.) Osteoclasts - A bone cell involved in the breaking down of bone and the removal of wastes.
f.) Enzymes - Dissolve the injured or damaged part of the bone so that new, healthy bone can be laid down. Chemical reactions in the body.