Answer:
They are generated by natural phenomena like Earth's magnetic field and also by human activitys, mainly through the use of electronics. Electric magnetic field are a combination of invisible electric and magnetic fields of force
which stem adaptation is most helpful in protecting a plant from disease
Answer:
The outer layer of a plant—analogous to our skin and also called the epidermis—is the first defense to keeping pathogens out.
Explanation:
The epidermis itself is shielded by additional layers on certain plant parts: bark on a tree, a waxy cuticle on leaves. Plants also produce chemicals that are toxic to pathogens or to insects.
6. Describe two things that might affect the validity of findings in this experimental design:
Answer:
1: Depends on which science project and experiment: Physical science: THE FORCES ACTING UPON AN OBJECT IN THE WRONG WAY. Natural science: Atmosphere, soil temperature humidity.
Explanation:
Lake Victoria in East Africa is home to many species of fish called cichlids. In 1954 the predatory Nile perch was introduced to Lake Victoria. The Nile perch became the dominant fish species in the lake by the mid-1980s. The number of cichlid species in the lake decreased as the Nile perch population increased. The perch preyed heavily on cichlid species that fed on algae and debris on the bottom of the lake. Algae in the lake increased, and oxygen levels decreased. The surface area of the gills of some cichlid species has increased in over 20 years.
A. Increased gill surface area has allowed the cichlids to change their diet and avoid competing with the Nile perch.
B. Increased gill surface area has allowed the cichlids to be camouflaged and avoid being eaten by the Nile perch.
C. Increased gill surface area has allowed the cichlids to leave Lake Victoria and establish populations in nearby bodies of water.
D. Increased gill surface area has allowed the cichlids to better absorb the limited oxygen in the water.
Answer:
D. Increased gill surface area has allowed the cichlids to better absorb the limited oxygen in the water.
Explanation:
As the Nile perch fed on cichlid species that feed on algae, algae growth increased in the lake. The algae absorbed more oxygen, leaving less for the fish. Those with larger gills were able to absorb oxygen more efficiently, and were able to survive.
When many different species live in an environment, the environment has high . if the number of predators increase in an area, the immediate effect will be a .
When the number of predators increase in an area, the immediate effect will be a decrease in number of prey.
What is a predator?A predator in an environment is an animal that kills other smaller animals in its niche for food.
The prey us the smaller animal that is being killed. Therefore when there is increase in the number of predators in an environment, the prey will decreases.
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Which body system breaks down food into nutrients.
Answer:
digestive system
Explanation:
Your digestive system breaks nutrients into parts small enough for your body to absorb and use for energy, growth, and cell repair.
Excretion and the Kidneys The kidneys remove excess water, minerals, and other waste products from the blood. The cleansed blood returns to circulation. Each kidney has nearly a million processing units called nephrons. Filtration and reabsorption occur in the nephrons.
- Filtration is the passage of a fluid or gas through a filter to remove wastes. The filtration of blood in the nephron takes place in the glomerulus, a small, dense network of capillaries. Each glomerulus is encased by a cuplike structure called Bowman's capsule. Pressure in the capillaries forces fluids and wastes from the blood into Bowman's capsule. This fluid is called filtrate.
- Most of the material that enters Bowman's capsule is returned to circulation. The process by which water and dissolved substances are taken back into the blood is called reabsorption.
- A section of the nephron tubule, called the loop of Henle, conserves water and minimizes the volume of filtrate. The fluid that remains in the tubule is called urine.
For Questions 7-10, write True if the statement is true. If the statement is false, change the underlined word or words to make the statement true.
____________7. Each kidney has nearly a million individual processing units called capillaries.
Each kidney has nearly a million individual processing units called capillaries is false as the units are called nephrons.
What are the nephrons?
Nephron, processing unit of the kidney, the shape that certainly produces urine withinside the procedure of doing away with waste and extra materials from the blood.
The nephrons paintings via a two-step procedure: the glomerulus filters your blood, and the tubule returns wanted materials for your blood and eliminates wastes. Each nephron has a glomerulus to clear out out your blood and a tubule that returns wanted materials for your blood and pulls out extra wastes.
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In an embryo, the formation of many types of tissues and organs occurs as a result of the process of.
Answer:
Gastrulation leads to the formation of the three germ layers that give rise during further development to the different organs in the animal body. This process is called organogenesis. Organs develop from the germ layers through the process of differentiation.
O warn people about which food is safe to eat o develop a strategy to prevent future algal blooms o warn people to stay away from the affected area o evacuate all wildlife from the bay
Answer:
evacuate all wildlife from the bay
Explanation:
Answer: The answer is to evacuate all wildlife from bay.
Explanation:
natural selection is the changes of size and shape of living things in
Answer:
natural selection is the changes of size and shape of living things in their body or body skeleton
Humans currently rely on fossil fuels for the majority of their energy needs. A. Why can't humans always use fossil fuels for energy? (5 points) B. What two steps would you take to conserve fossil fuels? (4 points) C. What two impacts do fossil fuels have on the environment? (6 points)
Answer:
I am going to answer the questions in one brief summary of fossil fuels.
Fossil fuels are non-renewable, meaning one day they will run out.
Fossil fuels are reliable, meaning rain or shine we can use them.
Fossil fuels emit greenhouse gases, causing our world to warm up.
In one cubic meter of the ocean, photosynthetic plankton produce 80,000 calories of energy each year. How many calories of energy are available in the bodies of the creatures that eat that plankton?
Select one:
a.
80,000
b.
8,000
c.
800
d.
80
8000 calories of energy are available in the bodies of the creatures that eat that plankton. Details about calories can be found below.
How to calculate energy available?In a natural habitat, living organisms feed on one another to derive energy needed for their metabolic activities.
However, only 10% of energy available is transferred to the organism because 90% (most) of the energy is used for the organism's metabolism.
According to this question, in one cubic meter of the ocean, photosynthetic plankton produce 80,000 calories of energy each year.
Therefore, 10/100 × 80,000 calories = 8,000 calories of energy are available in the bodies of the creatures that eat that plankton.
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Explain whether releasing a tropical fish, like a clownfish, into Artic waters would be likely to result in an invasive population of clownfish.
HELP ASAP!! The explanation can be short and sweet, but reasonable. Thanks
Describe how soil provides nutrients for plants
- List any essential nutrients for plant growth (hint search: NPK and plants)
Describe each nutrient briefly (one-two sentences each)
Use of fertiliser to supplement plant growth
Answer:
microrganism or microbes,break down organic compounds in to inorganic compounds in a process called mineralization
How do climate and weather differ?
A- weather is predictable
B- weather changes quickly
C- climate changes with seasons
Answer:
A. weather is predictable climate is not
Explanation:
What is the driving force of the North Equatorial Current in the Atlantic Ocean? What
causes this driving force?
Answer:
The primary driving forces of the surface currents are the thrust by the trade winds and westerlies.
Explanation:
The _____ states that energy is neither created nor destroyed.
A) Downstream
B) Meltdown
C) Turbine
D) Ethanol
E) Passive solar cooling
F) Utility
G) First Law of Energy
H) Refinery
I) Isotopes
J) Second Law of Energy
Answer:
first law of energy
Explanation:
please mark brainiest
Answer- G) First Law of Energy
Hope this helps
(brainliest is appreciated!)
How is earth’s motion related to the origin of the galaxy and it’s solar system?
Question:
How is earth’s motion related to the origin of the galaxy and it’s solar system?
Answer:
The Earth is a part of the galaxy and its solar system and as Earth was created with the big bang, it happened inside of them.
Explanation:
The relative motion of the Earth around the solar system is the Earth is moving and spinning around at a tilt. Our solar system in the galaxy is moving and the galaxy in the universe is constantly moving. They are all moving around a a central object just as the Earth revolves around the Sun.
Answer: The Sun's rotational equator is in the same flat plane. Earth was believed to be the center of the universe, which consisted only of those planets visible with the eye and an outlying sphere of fixed stars.
Explanation:
How does the color change for a positive starch test?
Answer:
When starch is present, it turns from brown to blue-black or purple.
Explanation:
Hope this helps
How do Kepler’s laws describe planetary orbits?
1) Planets move in elliptical orbits with the sun at one focus.
2) Planets speed up when they are closer to the sun because of the sun's gravitational pull.
Anyone know a research question.
I don’t know what topic to put in it.
Claim: Mental illness is inherited
What is a mutation? a a misinterpretation of the daughter strand b a break down of the mRNA structures in the cell c any change in the nucleotide sequence d a function of the ribosome
Mutation can be defined as any change in the nucleotide sequence. That is option C.
What is nucleotide sequence?Nucleotide sequence can be defined as the sequence of bases that are arranged in a particular form which contains instructions for the synthesis of proteins in a cell.
When there is a change in this sequence, mutation is said to have occurred.
Therefore, Mutation can be defined as any change in the nucleotide sequence.
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Magnifying Living Things
a leaf,tree bark,skin,flower.hair strand,grass
Did you observe any other characteristics of life in your samples?
For each of your samples, research how the structures you observed under magnification help the organisms carry out basic functions of life.
The characteristics of life observed in the samples was the presence of different types of cells.
What is Magnification?This is defined as the process of enlarging the apparent size of an object through objects such as a microscope.
The structures observed under magnification of leaves include the epidermal cells which help the organisms carry out gaseous exchange.
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Which mechanism of gene expression regulation is the fastest but most energy demanding of the cell?.
Answer:
Post-translational control.
Explanation:
Because this mode involves modification of an already synthesized protein, it is the fastest in terms of regulating the activity of the gene product.
How are the hip bones in a frog different from the human pelvis?.
Answer:
Just like in a person's arms, in a frog's front legs are bones called the humerus, the radius and the ulna. However, a frog's radius and ulna are fused into one bone. The same is true for a frog's legs -- the femur supports its upper leg, and the bones of the lower leg, the tibia and fibula, are fused.
The frog's larger back legs consist of a femur as the strong, upper leg support, just like in humans, albeit on a different-sized scale. The back legs also consist of a fibula, as well as tibia; however, on the frog these two bones are fused together into one.
N5 bio- what is cellular respiration?
3. (b) How does crossing over increase the variation in the gametes (and hence the offspring)?
Answer:
During crossing over, part of one chromosome is exchanged with another. The result is a hybrid chromosome with a unique pattern of genetic material. Gametes gain the ability to be genetically different from their neighboring gametes after crossing over occurs.
Pls help fast!
I wanted to see if my answers were right
which are : A, B D.
Answer:
C,A,A are the correct answers
In bears, the codon UUU codes for the amino acid phenylalanine. In mice, the codon
AAA codes for the amino acid lysine. In cats, the codon AAU codes for the amino acid
asparagine. In dogs, the codon GGG codes for the amino acid glycine. Which amino
acid would the codon AAA code for in alligators?
A:Glycine//Because the genetic code is not universal
B:Lysine//Because the genetic code is universal
C:Asparagine//Because the Genetic code universal
D:Phenylalanine// Because the genetic code is not universal
Integrating sensory information and neural functions is a function of the __________. a. forebrain b. cerebrum c. thalamus d. cerebellum please select the best answer from the choices provided a b c d
Integrating sensory information and neural functions is a function of the cerebrum (i.e., the brain).
What is the cerebrum?The cerebrum or brain is the most important organ associated with functions of the nervous system.
The cerebrum is an organ that coordinates complex functions such as speech, movements, etc.In conclusion, integrating sensory information and neural functions is a function of the cerebrum (i.e., the brain).
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write any three advantages of classification of living beings
please can you answer ♡♡♡
Answer:
The advantages of classifying organisms are as follows:
(i) Classification facilitates the identification of organisms.
(ii) helps to establish the relationship among various groups of organisms. (iii) helps to study the phylogeny and evolutionary history of organisms.