There are only five types of nucleotide basis are present in the genetic material which makes up the all the genetic information of the individuals. These nucleotides are named as Adenine, Thymine, Guanine, Cytosine and Uracil. In all the living beings on the earth, these only five nucleotides are present which decides their behavior and functions on the earth. These five bases have features to get any arrangements according to the situation. Their different arrangement at the heredity material makes the difference in all living beings regarding their behavior.
B. Most of the nuclear radiation you are exposed to occurs naturally in the environment.
C. Naturally occurring nuclear radiation is called background radiation.
D. All natural radiation is at a level low enough to be safe.
Answer:
Option D
Explanation:
There are three major sources of background natural resources a) Terrestrial Radiation
; b) Internal Radiation and c) Cosmic Radiation
Cosmic Radiation is the radiation received from sun and stars. These radiations are received in traces as they go through different filters such as earth’s atmosphere, its elevation and magnetic field.
Terrestrial Radiations are received from radioactive minerals like uranium, radium and thorium. Since these minerals exists in soil and rock, their exposure is not harmful to mankind
Internal Radiation exists within the body of humans as radioactive potassium-40 and carbon-14 is presents with in the body since birth
Hence, option D is correct
B- producer to consumer
C-host to parasite
D- predator to prey
The energy transfer that is least likely to be found in nature is predator - prey. Details about energy transfer can be found below.
Energy is transferred in nature when organisms feed on one another.
For example;
However, the transfer of energy does not occur in the direction of a predator to prey but occurs the other way around.
Learn more about energy transfer at: brainly.com/question/18649915
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