what happens during implantation? &The embryo is developed enough to be called a fetus at the end of which stage?

Answers

Answer 1
Answer: by the Time the zygote reaches the uterus, the dividing ball of cells has separated into two sections.The inner group of cells will become the embryo. The outer group will become the cells that nourish and protect it.
2. The embryonic period

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Three sources of genetic variation are
which image is formed when the real image is projected up through the microscope to the plane of the eyepiece?
How can an injury to a peripheral nerve cause loss of both sensory and motor functions?
A cross is performed between a plant with genotype ttyy and a plant with genotype ttyy. if the two genes independently assort, what is the probability, expressed as a decimal, that the offspring will be homozygous for gene t and homozygous for gene y?
A relationship between a consumer and produceris best illustrated by a(1) snake eating a bird(2) tree absorbing minerals(3) fungus breaking down wastes(4) deer eating grass

Two factors that affect the rate at which enzyme function or changes the shape of enzyme

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One factor that affects the rate at which enzyme function or changes the shape of an enzyme would be temperature. Another one would be pH.

What should a person eat if she wants the fastest supply of energy?

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A person should eat energy bars and they should eat energy drinks because it supplies a good amount of carbohydrates (sugar) that can quickly convert inside your body to energy.

(Some good examples of energy drinks would be the brand 'Gatorade')

I am not so sure what exact brand of energy bars to eat, but I know for a fact that each energy bar contains carbohydrates, so probably any energy bar would work. :)

↑   ↑   ↑  Hope this helps! :D

she sould eat Glucose because it gives the fastest supply of energy

The damage caused by hurricane Katrina took the form of _______. a. oil spills and building damage b. flooding and mold infestations c. toxic chemicals and sewage d. all of the above

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Oil spills and building damage, toxic chemical and sewage, and also flooding and mold infestations, all are the cause of Hurricane Katrina, hence option D is correct.

How did hurricane Katrina damage the area?

Hurricane Katrina is a strong storm that hit the United States and its coast, it really affects public health and devastates New Orleans, it damage all the buildings and remove all the water to be used.

This storm damaged all the buildings and spill the oil and it creating flooding conditions around that area. Many areas have toxic materials and sewage release at public places. The pressure of the winds is very stronger to cause building damage.

Therefore, all of the above is the cause of  Hurricane Katrina, hence option D is correct.

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The damage of hurricane Katrina was widespread and permeated all areas of life within the gulf south states of Louisiana and Mississippi. The leakage of petrochemical into the water not only add pollutants, it also exposed all survivors who trudged through it to chemical poisoning. The building damage was ubiquitous. Every building within its path sustained some degree of damage. The flooding and mold that followed further damaged structures. As floodwaters rose sewage was also added to the toxic mix with in the water. So the correct answer is D.

Glaucoma is a leading cause of blindness. Studies have linked a common form of glaucoma to three genes and more than 20 genetic loci. Which best describes glaucoma?a. . a recessive trait that requires multiple recessive alleles to be expressed
b. . a polygenic trait that is influenced by the number of alleles present
c. . a codominant trait that is expressed more often when more dominant alleles are present
d. . a dominant trait that depends on the presence of only one of many dominant alleles

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The answer to the question given is letter b. a polygenic trait that is influenced by the number of alleles present.

Large multiplex families suitable for linkage analysis are typically affected by early-onset forms of glaucoma inherited as Mendelian dominant or recessive traits.
>
polygenic trait is one whose phenotype is influenced by more than one gene.
>A 
 polygenic inheritance is one genetic mechanism giving us a continuous range of possibilities.

The answer is b. a polygenic trait that is influenced by the number of alleles present.

There are three genes linked to a common form of glaucoma, so it must be the polygenic (meaning more than one gene included) trait. The polygenic traits are influenced by the number of alleles. In this case, there are more than 20 genetic loci which means there must be a great number of alleles for all loci.

Choose all the answers that apply. Which of the following minerals can be scratched with a fingernail? -talc
-diamond
-topaz
-quartz

Answers

Talc is the mineral which can be scratched with a fingernail and is therefore denoted as option A.

What is Talc?

This is a mineral which consists of elements such as the following listed below and is often used as lubricants.

  • Magnesium
  • Silicon
  • Oxygen etc.

Fingernail is stronger which is why it can be scratched by it unlike the other minerals mentioned in the options.

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the answer is Talc, it can be scrached with a finger nail, all the others are harder than a fingernail

which of the following is being used to catch fish? A.electricity B. light C. sound D. all of the above

Answers

B-light because ,using electricity might electrocuted the fish and making noises will just scare the fish away.

Answer:

B

Explanation: