Permian-Triassic is the answer
6. If you are given a piece of white marble and a piece of white quartzite what test can
you do to determine which is which? What results will you get?
Answer:
Quartzite is a metamorphic rock formed when quartz-rich sandstone or chert has been exposed to high temperatures and pressures. Such conditions fuse the quartz grains together forming a dense, hard, equigranular rock. The name quartzite implies not only a high degree of induration (hardness), but also a high quartz content. Quartzite generally comprises greater than 90% percent quartz, and some examples, containing up to 99% quartz, and are the largest and purest concentrations of silica in the Earth's crust. Although a quartz-rich sandstone can look similar to quartzite, a fresh broken surface of quartzite will show breakage across quartz grains, whereas the sandstone will break around quartz grains. Quartzite also tends to have a sugary appearance and glassy lustre. The variety of colours displayed by quartzite are a consequence of minor amounts of impurities being incorporated with the quartz during metamorphism. Although quartzite can sometimes appear superficially similar to marble, a piece of quartzite will not be able to be scratched by a metal blade, and quartzite will not fizz on contact with dilute hydrochloric acid.Explanation:
How did the findings from Hershey and Chase’s bacteriophage experiments likely influence the Meselson-Stahl experiment, and how might Meselson and Stahl’s results help scientists understand how damaged DNA can be inherited by future generations?
Answer:
c, just took the test
Explanation:
common disease in birds.
O Parvo
O Leukemia
O Snuffles
O Polyoma
Answer:
Common Bird Parasites & Diseases
Salmonella. The most common disease of feeder birds, Salmonellosis is caused by bacteria from the genus Salmonella and often begins as an intestinal-tract infection. ...
•Trichomoniasis. ...
•Aspergillosis. ...
•Avian pox. ...
•Mites and Lice. ...
•Lyme Disease. ...
•Preventing Spread of Diseases at Bird Feeders. ...
•Dead or Sick Birds.
How many bonds does oxygen have?
Answer:
2
Explanation:
duhhhhhhhhhhhhhhhhh
T/F we make synthetic materials to serve different purposes that meet our wants and needs
Explain how nitrate ions help plants to grow.
Answer:
Explanation:
Both nitrate ions and ammonium ions can be taken up by plants (some prefer one to the other). These ions provide nitrogen for the plant to make its own amino acids for protein synthesis. Except in very high nitrogen soils, the addition of extra nitrate will stimulate plant growth.
Nitrogen is an essential macronutrient that is a component of many essential molecules, such as amino acids, proteins, nucleic acids, and chlorophyll.
What are the roles of nitrate in the growth of plants?Nitrate ions are essential nutrients for plant growth and development. Nitrogen is the fourth most abundant element in plants and is crucial for the growth of leaves, stems, and roots.
Plants require nitrogen in the form of nitrate because it is the most oxidized. It is an easily available form of nitrogen for plants to take up from the soil. Nitrate is absorbed by plants through their roots and transported to the plant cells, where it is used to synthesize amino acids, proteins, and other essential molecules.
Nitrate plays a crucial role in the process of photosynthesis, which is the process by which plants convert sunlight into energy.
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True/False: RNA contains uracil instead of thymine.
a. True
b. False
Answer:
True
Explanation:
Which one of the solutions do you think countries most affected by natural hazards should try? Why?
Please help I will give brainliest!!
Answer:
100 % used of renewable energy.
Explanation:
100 % used of renewable energy by those countries that are affected by natural disasters because renewable energy does not produce any pollution that affect climate. If there is no change occur in the climate, the environment becomes stable and moves towards positive growth of the environment. If there is 0 % pollution is produced in the environment, the environment growth will be increases and equilibrium of environment should be accomplished.
PLEASE HELP ME ASAP!!! GIVING 14 POINTS AWAY!!!
Answer:
b
Explanation:
which structure in the figure would most likely be used to form muscles and connective tissue
Q3 because the muscle tissue isnt that complex and it inst that connective.Explanation:
Bone and muscles are the connective tissue. Muscle tissue is made up of sheets and fibers of muscle cells woven together.
What is connective tissue?Animals have a specific tissue called muscle that contracts when activated, applying forces to various body parts. Together, these fibers and sheets are referred to as muscles, which regulate many other contractile processes as well as an organism's movements.
Depending on their purpose, animals have one of three types of muscle. Despite modest differences, these muscles have a similar structure and function. Muscle tissue has a unified function and is frequently joined by the same nerve bundles.
Therefore, Bone and muscles are the connective tissue. Muscle tissue is made up of sheets and fibers of muscle cells woven together.
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GIVING 14 POINTS AWAY PLEASE HELP ME ASAP!!!!!!
Answer:
vomiting
Explanation:
i commented on your other one, please don’t spend all your points
Answer:
The answer to the question is vomiting
can some1 help me with this
Answer:
Variation allows some individuals within a population to adapt to the changing environment. Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation.
Explanation:
Hope this helps
which statement is true about natural selection?
Answer:
I would say B
Explanation:
Because atural selection is the mechanism for how evolution occurs over time. Basically, natural selection says that individuals within a population of a species that have favorable adaptations for their environment will live long enough to reproduce and pass down those desirable traits to their offspring.
Transcribe the following G G C C G T T T C A C C to mRNA
a) CCG GCA AAG TGG
b) CCG GCU AAG TGG
c) CCG GCU AAG UGG
d) CCG GCA AAG UGG
Answer:
The Answer is D, trust. I got all of them wrong and the system showed that this was the correct one.
Explanation:
The transcription of G G C C G T T T C A C C to mRNA is CCG GCA AAG UGG. Hence, option D is correct.
What do you mean by Transcription?Transcription may be defined as a biological process that involves the transformation of a DNA strand into its mRNA sequence. It occurs in the nucleus of the cell.
In mRNA, Adenine is transcribed into Urcail instead of thymine. So, the mRNA sequence will be synthesized according to that.
Therefore, the correct option for this question is D.
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Before a plant grown in a greenhouse can be planted in a field or garden, it should first be________ off.
Fill in the blank.
Please say the right answer.
Answer:
hardening off
Explanation:
In what year should we expect ocean pH to adversely affect zooplankton population?
The year we should expect ocean pH to adversely affect zooplankton population is 2030.
What are zooplanktons?Zooplankton is a small floating or weakly swimming organisms that drift with water currents and, with phytoplankton, make up the planktonic food supply upon which almost all oceanic organisms are ultimately dependent.
Ocean acidification may affect zooplankton directly by decreasing in pH, as well as indirectly by trophic pathways, where changes in carbon availability or pH effects on primary producers may cascade up the food web thereby altering ecosystem functioning and community composition.
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___________________________________ is the process by which organisms best suited to their environments survive and reproduce.
a
Mutations
b
Characteristics
c
Artificial Selection
d
Natural Selection
Answer:
natural selection
Explanation:
write the difference between Picture Plant, mushroom and dodder on the basis of stem, leaf and water requirement.
Pls answer in paragraph.
Who will answer will be marked as brainlist.
Pls answer.
Required urgently.
Regards.
Answer:
Explanation:
A exchange of gases between the leaf and the atmosphere
Bloss of water vapour from the leaves and stems of a plant
С
movement of water from the roots to the leaves
D
movement of water through the cells of the leaf
hope this helped if not sorry i tried
What are the think discs between vertebrae made up of?
cartilage
joints
ligaments
Answer: Annulus fibrous and a nucleus pulposus
Explanation: An outer ring of fibrous cartilage termed the annulus fibrous, which surrounds a more gelatinous core known as the nucleus pulposus; the nucleus pulposus is sandwiched inferior and superiorly by cartilage end-plates.
Answer:
cartilage
Explanation:
a. What information could be useful to include in a warning on an e-cigarette ad?
QUESTION 14
Scientists state that burning fossil fuels is a big threat to our clean air. What else could be a threat to our supply of clean air?
What type of sex chromosome will be contained by the sex cells of a female giraffe?
A. X chromosome
B. Y chromosome
C. X and Y chromosome
Explanation:
The type of sex chromosome will be contained by the sex cells of a female giraffe is X chromosome.
Give brainliest please..
Which of the following is a concern about the use of hydropower?
A. Hydropower plants pollute the rivers and streams that provide the
energy.
B. Hydropower plants often change the natural flow of water in an
area.
c. Hydropower plants produce radioactive waste.
D. Hydropower plants use a lot of energy to cause the water to flow
uphill into the turbine.
PLEASE HELP UGH
Why do classification systems change over time?
O Scientists find new evidence in their studies.
O Scientists use old methods of classification.
O Scientists repeat experiments and find no changes.
O Scientists find similar evidence to previous work.
Classification systems change over time because scientists find new evidence in their studies. So, the correct option is (A).
What is Classification System?There are many types of classification systems that are used for different purposes. The classification of organisms takes place in the form of a classification system called Linnaean classification.
Linnaean classification involves the use of organisms grouped using a hierarchy called taxa which includes taxonomic levels and taxonomic groups that animals are placed in based on their characteristics and even shared ancestry.
The different levels of biological classification are as follows:
Species » Genus » Family » Order » Class » Phylum » Kingdom » Domain
It changes over time as scientific studies find new evidence.
Thus, classification systems change over time because scientists find new evidence in their studies. So, the correct option is (A).
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hello please help i’ll give brainliest
Answer:
The Earth has two basic sources of energy - that reaching the Earth from the Sun (Solar Energy) and that reaching the surface of the Earth the Earth itself (Internal or Geothermal Energy). Solar Energy - reaches the Earth in the form of radiant energy, and makes up 99.987% of the energy received by the Earth.
Explanation:
hope this helps
____is the amount of matter in an object and is measured in kilograms.
A. Mass
B. Gravity
C. Newton
D. Weight
In what type of cells does meiosis occur?
A liver cells
B. somatic cells
C. all living cells
D. reproductive cells
Answer: !C
Explanation:
what are the 3 ways a species can become isolated and form new species? define what each of them mean.
Answer:
behavioral isolation, geographic isolation, and temporal isolation
List one way that mitosis and meiosis are similar
and 1 way they are different.
Which of the following is an example of refuse? A. Medical waste thrown out by a hospital B. The waste produced by a chemical factory C. The waste people flush down their toilets B. Spoiled food thrown out by a supermarket
Answer:
the last one
Explanation:
The best example of refuse here is option D. Spoiled food thrown out by a supermarket.
What is refuse?Refuse refers to any disposable materials, which includes both recyclable and non-recyclable materials. The term refuse is often used interchangeably with waste, but refuse is a broader term that applies to anything that is leftover or refused as a result of mishandling or spoilage occurred during manufacturing or processing.
Whereas, waste refers to leftovers including manufacturing byproducts as chemicals, or dirty water that cannot be reused. Municipal solid waste (MSW), sometimes known as refuse, is a community's nonhazardous solid waste that needs to be collected and transported to a processing or disposal location.
Thus, from description, best example of refuse here is option D. Spoiled food thrown out by a supermarket
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