The identify of the four DNA nucleotides is based on b) covalent bonds.
Answer:
Answer is C. Tracking the price of oil when a war in the middle east interrupts the flow of crude oil.
Explanation:
Scientific method is a kind of carrying out research for identifying and subsequently solving a problem. it can also be explained as series of steps in using scientific investigations for answering issues about the nature.
Answer and explanation:
The garden pea had many advantages to be used as a model in inheritance studies. These plants grow very fast, so you can rise several generations in little time. This fundamental if you want to do this kind of studies. The study object needs to have a brief generational time, so they can be selected and their descendants can be raised again. Another advantage was that garden peas can be raised easily. They don't need any special care. Besides, they were common in the market. Mendel could find them and bought them any time that he wants. Also, they presented visible characteristics that could vary from one plant to another. Some pea gardens had violet flowers, while others had white flowers. Some were tall, while others were small. These made possible to select plants with specifics features and to study if they could transmit these features to the next generations.
It could be really difficult to do the same experiment in humans. several years would have to pass to observe new generations, so during the lapse time of the researcher, only a few human’s generations could be studied.
B) made of just one substance
Explanation:
A mineral is just made up of one chemical substance.
Geologically, a mineral is defined as a naturally occurring inorganic chemical substance, with a definite chemical composition and well ordered atomic structure.
- Minerals are produced naturally through inorganic chemical processes.
- Calcite is mineral that makes up limestone and it consists of Calcium carbonate.
- Most rocks are aggregate of minerals.
- Most rock forming minerals are silicates.
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