Answer:
True, polar covalent bond
Explanation:
A covalent bond is one of the types of the chemical bond which is formed when the electrons are shared between the two atoms.
Based on the magnitude of the sharing of electrons between atoms two types of covalent bonds are formed which are: pure covalent bond in which the electrons are shared equally whereas the polar covalent bond in which the electrons are shared unequally between two atoms.
Since there is a type of covalent bond formed which has unequal sharing of electrons called polar covalent bond therefore true is the correct answer.
Use the Gizmo to estimate the age of each of the objects below For these questions, each second in the Gizmo represents 1,000 years.
Using the Half-life Gizmo, estimate the ages of the objects as follows:
Egyptian papyrus: Approximately 12,000 years
Aboriginal charcoal: Approximately 24,000 years
Mayan headdress: Approximately 6,000 years
Neanderthal skull: Approximately 36,000 years.
1. Egyptian papyrus (63% original Carbon-14 atoms):
The papyrus has undergone decay, and given its remaining Carbon-14 percentage, it can be estimated to be approximately 12,000 years old. This calculation is based on the principle that each half-life represents a reduction to half the initial amount of radioactive material.
2. Aboriginal charcoal (22% original Carbon-14 atoms):
With a lower remaining percentage, the Aboriginal charcoal is estimated to be older than the papyrus. The calculation suggests an approximate age of 24,000 years, indicating a longer time since the initial presence of Carbon-14.
3. Mayan headdress (79% original Carbon-14 atoms):
The higher remaining percentage of Carbon-14 in the Mayan headdress indicates a more recent age compared to the previous objects. The estimation using the half-life concept suggests an age of around 6,000 years.
4. Neanderthal skull (3% original Carbon-14 atoms):
The Neanderthal skull has experienced significant decay, and the low remaining percentage implies a much older age. The estimation using the Half-life Gizmo suggests an approximate age of 36,000 years.
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Answer:
yes i thank..
Explanation:
i hope this helps
A.
Variation in gene pool
B.
Lack of mutations
C.
Absence of natural selection
C. absorption
D. reflection
The correct answer is (b) Refraction
When a beam of light is passed from one medium to another medium then the beam of light bends when it passes from one medium to other, this phenomenon is called as Refraction. This change can be determined by measuring the change in the wave speed and the initial direction of wave relative to the direction of the change in speed. Example: when a beam of light is passed through a prism, when a laser light is passed through a ice cube.
Answer:
By collecting runoff during the rainy season much of the land degredation caused by water erosion is prevented.
Explanation:
On USA test Prep this would be option D.
1) By selecting the genetic information that is passed on to future generations, genetic engineering is similar to natural selection.
2) Unlike natural selection, genetic engineering selects the organisms most beneficial to the environment.
3) By selecting the genetic information that is passed on to future generations, genetic engineering can happen at a different rate than natural selection.
4) Like natural selection, genetic engineering may be used on all organisms, including humans.
5) The effects of genetic engineering apply only to the organism selected, but natural selection affects the entire population.
Answer:
1) By selecting the genetic information that is passed on to future generations, genetic engineering is similar to natural selection.
3) By selecting the genetic information that is passed on to future generations, genetic engineering can happen at a different rate than natural selection.
4) Like natural selection, genetic engineering may be used on all organisms, including humans.
Explanation: In natural selection there is overtime selection for one particular trait and is mostly based on phenotype, whilst genetic engineering uses genotype of an organism and it is the deliberate modification of an organism by manipulating the genetic material
Answer: 1,3,4
Explanation: checked on edgnuity :)