DNA is a double-stranded, helical molecule composed of nucleotides, each of which contains a phosphate group, a sugar molecule, and a nitrogenous base. ... As the DNA polymerase moves down the single-stranded DNA, it uses the sequence of nucleotides in that strand as a template for replication.
Mexico .. if thats an option
Which planetary model allows a scientist to predict the exact positions of the planets in the night sky over many years?
A) The planets' orbits are circles in a geocentric model
B) The planets' orbits are circles in a heliocentric model
C) The planets' orbits are ellipses in a geocentric model
D) The planets' orbits are ellipses in a heliocentric model
<u>Answer:</u>
The planets' orbits are circles in a geocentric model is the planetary model allows a scientist to predict the exact positions of the planets in the night sky over many years.
<u>Explanation:</u>
- Ptolemy suggested that the model that the planets moving around the sun in a circular path. As the statement clearly explains that sun the middle of the solar system.
- Due to the gravitational pull of the sun, all the planets rotate around the sun in a circular path.
- All these are because of the universal law of gravitation. In the solar system, each planet has its path and they will rotate along with their path.
Genetics is the very means of biodiversity. Biodiversity literally means the diversity (or variety) of living organisms. Genetics contributes to this through the variety of genes and adaptations that occur to different organisms in order to survive and even thrive in their environment. These adaptations result in different species, subspecies, and, with time, completely new organisms each specialized to live in a specific manner. As an example, cactuses evolved to survive in low water/high temperature environments when normal plants can’t. Without evolution, there would be no plants in the desert as they wouldn’t be able to survive the heat and drought.
D. an observation that has a number associated with it.