The Hawaiian Islands were formed by a hot spot occurring in the middle of the Pacific Plate. While the hot spot itself is fixed, the plate is moving. So, as the plate moved over the hot spot, the string of islands that make up the Hawaiian Island chain were formed.
What is hotspot?
"In geology, hotspots (or hot spots) are volcanic locales thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle".
What is Pacific plate ?
"The Pacific Plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. At 103 million km2 (40 million sq mi), it is the largest tectonic plate".
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Answer:
Explanation:
The Hawaiian Emperor seamount chain is a well-known example of a large seamount and island chain created by hot-spot volcanism. ... The Hawaiian Islands were formed by such a hot spot occurring in the middle of the Pacific Plate.
B. It's easier to introduce genes from one species into another than from just one species.
C. Scientists could have just "turned on" the rice genes, but they wouldn't have learned anything from that process.
D. It's easy to extract genes from bacteria.
E. The scientists didn't know how to "turn on" the genes in the rice.
Answer:
A. The rice genes didn't make the right type of vitamin A.
Explanation:
Regular white rice does not have the gene to produce beta carotene. The human body converts the beta carotene into vitamin A.
To increase the nutritional value of rice, the gene for beta carotene from daffodil flowers was inserted into the cells of endosperm of rice.
This allowed these cells of the genetically engineered rice varieties to produce beta carotene. Production of beta carotene imparted golden color to the rice grain and hence, the name.
Bacterial Population
Time
Which of these most likely explains why the bacterial population stopped growing?
The bacteria mutated from photosynthetic to carnivorous organisms and consumed one another until all the individuals were dead.
The bacteria reproduced in the system but eventually died due to limited resources
The bacteria became diseased and were unable to survive in the closed system
The bacteria competed for nutrients and died after all the nutrients were consumed
The statement that most likely explains the stop of bacterial populations to grow is the bacteria competed for nutrients and died after all the nutrients were consumed.
Bacterial growth may be defined as the proliferation of bacterium into two daughter cells, in a process called binary fission.
When there are enough nutrients in the petri dish, a rapid increase is shown in the graph, but during the course of time when nutrients become limited, it affects the growth of the bacterial population.
Therefore, the statement that most likely explains the stop of bacterial populations to grow is the bacteria competed for nutrients and died after all the nutrients were consumed.
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B - The bacteria competed for nutrients and died after all the nutrients were consumed
b. the lynx reproduce at a higher rate.
c. the lynx population crashes.
d. the food source for the hares increases.
e. the lynx begin preying upon birds.
The immediate next step in the cycle is the lynx population crashes. Hence option c is correct.
Population is defined as the entire group of people, regardless of whether they are part of a country or share a certain trait. It comprises of a related collection of species that live in a specific area and have the ability to interbreed. It is calculated by dividing the sum of all population variables by the total population of variables.
Following a delay of one to two years, the lynx population drop occurs after the snowshoe hare population crash. Lynx continue to eat well even as the quantity of hares begins to drop because they can easily catch the starving hares. Lynx populations decrease as hares become harder to find.
Thus, the immediate next step in the cycle is the lynx population crashes. Hence option c is correct.
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C. The lynx population crashes due to their food source being gone.
A. thin brown stalks
B. the sperm
Answer:
The sporophyte stalk, called the seta, bears the sporangium (spore capsule) on its tip. One sporangium may produce up to a million spores.
The best definition for a macromolecules is the most abundant elements found in living cells. The correct option is d.
A macromolecule, such as a protein or nucleicacid, is a very large molecule that is important in biophysical processes.
It is made up of thousands of atoms that are covalentlybonded. Many macromolecules are polymers composed of smaller molecules known as monomers.
Macromolecules are essentially polymers, which are long chains of molecular subunits known as monomers.
Long polymers are found in carbohydrates, proteins, and nucleic acids. They are classified as macromolecules due to their polymeric nature and large size.
Macromolecules are made up of monomers, which are single units joined together by covalent bonds to form larger polymers. The most abundant elements found in living cells are the best definition for macromolecules.
Thus, the correct option is d.
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Your question seems incomplete, the missing options are:
a. a trace element
b. a vitamin
c. an organic molecule necessary for life
d. the most abundant elements found in living cells
Answer:
There are no answers to choose from.
Explanation:
However, the prefix macro- means big, so the word macromolecule means large molecule. Macromolecules are also known as the molecules of life, they all contain carbon. The four macromolecules are carbohydrates, proteins, lipids, and nucleic acid. Carbohydrates are used as a quick energy source, they can be broken up into monosaccharides, dsaccharides, and polysaccharides. Proteins are used as catalyst to help speed up chemical reactions. Lipids are also known as fats, they can either be saturated or unsaturated. Nucleic acids contain information.
Examples of each:
Carbohydrate- Gluten
Protein- Lactase
Lipid- butter, or oil
Nucleic Acid- DNA or RNA
Students have been assigned to write reports on cell organelles. Eric's report is about the organelle that supports and gives structure to plant cells. Which organelle is Eric writing about?
O cell wall
cell membrane
cytoplasm
O nucleus