Answer: Alkali metals and alkaline earth metals both have chemical reactivity to air and water.
Alkali are in group 1 of the periodic table. Alkaline earth metals are in in group 2 of the periodic table. The main difference between alkaline and alkali is that alkali metals have one valence electron, when alkaline earth metals have two valence electrons.
Explanation:
18. During meiosis, homologous chromosomes exchange genetic material. This exchange of
genetic material -
A. increases the genetic variation
B. reduces the diploid number to the haploid number
C. increases the haploid
number to the diploid number
D. reduces the probability of mutations
A. increases the genetic variation
that's why individuals don't look like their partents. This process is called crossing-over
During meiosis, homologous chromosomes exchange genetic material. This exchange of genetic material - A. increases the genetic variation.
During meiosis, homologous chromosomes may exchange genetic material during a process called "crossing over."
Crossing over takes place during the pachytene stage of Prophase I of Meiosis I where the non-sister chromatids of homologous chromosomes exchange genetic materialthis results in recombination of the genetic material and creates a new genetic combination. This results in variations, which can be beneficial to the offspring providing a better survival advantage.So, the correct answer is Crossing over produces new combinations of genes on alleles, increasing genetic variation.
Learn more:
https://brainly.com/question/927405
pleaseee help me answer this question!!
Answer:
its b
Explanation:
A researcher has used in vitro mutagenesis to mutate a cloned gene and then has reinserted the mutated gene into a cell. To have the mutated sequence disable the function of the gene, what must then occur
Answer:
recombination resulting in replacement of the wild type with the mutated gene
Explanation:
Recombination is a process of the formation of new alleles when the original ones are broken down into bits and then ‘recombined’.
When mutation of a cloned gene occurs and the mutated gene is reinserted into a cell, the mutated sequence gene function will have to be disabled which involves recombination resulting in replacement of the wild type with the mutated gene.
A _____________ is an area of land surround a river (or body of water) formed mainly of sediment that is subject to flooding. Your answer: dam levee delta flood plain
Answer:
the answer is floodplain
what is the first type of macromolecule that is broken down by enzymes in the human digestive tract?
Answer:
Fats are the first macromolecules that are digested by saliva in oral cavity as saliva have ability to emulsify fats and oils
Explanation:
plzzz give me brainliest
Ally wants to reduce the amount of carbon dioxide in her local area. What are two different things that Ally could do to reduce the amount of carbon dioxide in the atmosphere? Explain how each would reduce the amount of carbon.
Answer:
1, Planting trees
2. Actions that reduce carbon dioxide emission
Explanation:
Ally can reduce the amount of carbon dioxide in the atmosphere in two ways
1. By planting trees or reforestation
Trees generally act as a sink for carbon through photosynthesis. Hence, planting more trees means that more carbon dioxide in the atmosphere will become fixed into the trees leading to the reduction of the gas in the atmosphere.
2. Reducing emission
To further reduce the amount of carbon dioxide in the atmosphere, the rate of emission of the gas has to be reduced. Actions such as the burning of vegetation and fossil fuels need to be reduced because they increase the emission of carbon dioxide gas into the atmosphere. The actions can be substituted for less or no carbon dioxide emitting alternatives.
When less carbon dioxide is emitted into the atmosphere and more is being fixed into trees, the overall concentration of the gas in the atmosphere will reduce greatly with time.
What impact does increased CO2 in the atmosphere have on marine life?
where do kiwi's come from?
Answer:
The original fruit is from the Far East, having been grown in what is now modern-day China for many centuries. It was only at the turn of the 20th Century, in 1904, that it arrived on New Zealand shores, when New Zealand school principal Isabel Fraser brought some kiwifruit seeds back from her travels.
Explanation:
thanks hope it helps u........ pls mark me as brainliest.......if it helps☺️
Which human job is most similar to the role of a producer? WILL MARK BRAINLEIST
I think restaurant critic? sorry ignore my spelling english I speak german
When people fall ill, their immune system fights the disease and tries to restore the person to good health. Which disease is known to attack the human immune system leaving the body susceptible to various kinds of infection?A. Chicken PoxB. PneumoniaC. TuberculosisD. AID
Answer:
D. Aids
Explanation:
Aids is one of the most deadliest diseases in the world. When you contract aids, it's designed to infect the cells that try to destroy it, it's a whole zombie apocalypse in your body and you don't even know it.
It attacks and weakens the immune system, and our immune system defends our bodies against infections, but HIV is extremely strong and it over powers the system, I'm not sure if there's an immune system strong enough to fight HIV or aids.
f a v o r i t e
s o n g?
Answer: My favorite song is see you again, That is my favorite I am not sure that I have another favorite song
Explanation:
Answer:
talkin tennessee by morgan wallen
Explanation:
A __ is a moderately wet and mild biome with four distinct seasons. Many trees are present with most annually losing their leaves in autumn. Animals are generally permanent residents.
Answer:
Temperate Deciduous Forest
Explanation:
Why does the cell complete DNA replication?
Answer:
The cell must replicated DNA because when the cell divides, the daughter cells must have identical copies of DNA. DNA replication occurs in the S phase during interphase of the cell cycle.
PLZ HELP WILL GIVE BRAINLIE AND STARS AND I WILL BE YOUR FRIEND
passive: doesn't require energy, from high to low concentration
active:requires energy, from low to high concentration
i dont know maybe
A frameshift mutation will change a.Only one codon b.Only two codons c.All codons both before and after the point at which the mutation occuredd.All codons only after the point at which the mutation occured
Answer: d. All codons only after the point at which the mutation occurred.
Explanation:
Mutation can be defined as the change that occurs at the genetic level.
A frameshift mutation can be defined as the genetic mutation in which the deletion or insertion of the number of the nucleotide in the sequence of DNA results.
The frameshift mutation changes the reading frame of the group of codon from the point where the change has occurred.
This results in the completely different translation from the previous sequence.
The blue-print of life. Type of Nucleic acid that controls all cellular activity.
A.
mRNA
B.
rRNA
C.
DNA
D.
tRNA
Fossil evidence cannot reveal which of the following important information about animals that have lived in the past? A. Size and weight. B. Diet and behavior. C. Exact year of death. D. Environment
Answer:
i would say B
Explanation:
Fossils can tell us about the size depending on how large the bones are. The year of death could possibly be determined by the way the bones look maybe, same with the environment, showing what type of animal; it could be a type of fish. But I believe there is no way fossils could show the diet and behavior of the animal.
What is the primary Force that causes the Rock slide, slumping and soil creep? Will it hearttttt
Answer: Gravity is the main force responsible for mass movements. Gravity is a force that acts everywhere on the Earth's surface, pulling everything in a direction toward the center of the Earth. On a flat surface, parallel to the Earth's surface, the force of gravity acts downward.
What type of energy is formed when chemical bonds are broken?
A)Thermal energy
B)Chemical energy
C)Radiant energy
D)Light energy
Answer:
option A.thermal energy because if a bond breaks it loses energy in the form of heat which is thermal energy.
Explanation:
Answer:
ik im late but its chemical energy
Explanation:
what are the products of a light-dependent reaction in photosynthesis?
Why do people feel fireworks before hearing it?
Answer:
People feel fireworks before hearing it because light travels faster than sound.
Explanation:
We always see the colors of the fireworks before hearing their defeaning sounds. This is because light travels faster than sound, so we can see the light before hearing the sound. An example of this is seeing lightning before hearing thunder. When lightning strikes, the air around it moves very quickly, causing vibrations.
Hope this helps!
xoxo,
cafeology
Humans do not go through photosynthesis, however it is still important to us. Why is it so important to us? Be specific.
Answer:
It is still important, because photosynthesis produces oxygen which is what we breathe.
Photosynthesis is also necessary to grow food, which is what we eat
Explanation:
How are structures G and F related? What are their names and how do they function?
Please helppp I’ll give brainliest
Answer:
F is the filament and G is the anther. The anther produces pollen (male reproductive cells). The filament holds the anther up. They are related because they are both male parts of a flower.
Explanation:
Hope this helps
How is a law passed in a bicameral legislature
Answer:
A bicameral legislature has legislators in two separate assemblies, chambers, or houses. ... Enactment of primary legislation often requires a concurrent majority—the approval of a majority of members in each of the chambers of the legislature.
Hope this helps, have a wonderful day/night, stay safe, happy holidays, and merry christmas!
two importance of proteins in human
Answer:
Growth and Maintenance. Your body needs protein for growth and maintenance of tissues. Yet, your body’s proteins are...
Causes Biochemical Reactions. Enzymes may also function outside the cell, such as digestive enzymes like lactase and...
Acts as a Messenger. Some proteins are hormones, which are chemical messengers...
Explanation:
your welcome
What are two ways carbohydrates can be used in the ecosystem?
can you please help? :((
Answer:
2nd one
Explanation:
Which type of respiration is the most efficient in producing ATP?*
O aerobic
O anaerobic
O fermentation
glycolysis
Answer:
lol it might be a estimate good luck its not the real answer its a estimate to the answer
Explanation:
Answer:
Aerobic respiration
Explanation:
A plant's life cycle has two main parts, so it is called the _____.
A.alternation of generations
B.meiosis
C.pollination
D.fertilization
Answer:
A. alternation of generations
Explanation:
Basically, a plant's life cycle has two main parts, namely a diploid and a haploid phase. Since the plant alternates between these two phases in its life cycle, the alternation is typically called the alternation of generations.
Hope this helped!
A. alternation of generations
Alternation of generations (also known as metagenesis) is the type of life cycle that occurs in those plants and algae in the Archaeplastida and the Heterokontophyta that have distinct haploid sexual and diploid asexual stages.
8. Which system works most directly with the nervous systen to move
the body?
10 points
A-immune
B-respirato
C-digestive
D- muscular
Answer:
D
Explanation:
Muscular system works most directly with the nervous system to move the body
