Answer: Option (b) is the correct answer.
Explanation:
A compound is defined as the substance in which different elements are chemically combined together in a fixed ratio by mass.
For example, 
is a compound and elements are present in 1:4 ratio.
A compound can be divided into its constituent or simpler substances.
On the other hand, a molecule is defined as a specie that contains same type of elements.
For example, 
is an oxygen molecule.
And, an element is defined as a substance which is made up of only one type of atoms. An element can never be broken down into its constituent particles.
For example, a piece of lithium metal will contain atoms of lithium only.
Thus, we can conclude that the statement elements are made up of one kind of atom best explains how elements can be distinguished from molecules and compounds.
This is an example of founder effect and genetic drift. The right answer is A and C only
Explanation:
Genetic drift is a mechanism in the process of evolution in which the sampling error ( change in allele frequencies of population occur).
Here Genetic drift will lead to founder effect as colonization of species has taken place.
When a small population forms colones and does not contain the genetic diversity present in parental population. The movement from larger population to smaller population and having different gene frequencies is called Founder effect. The change in the alleles would lead to generation of same alleles and hence they will experience drift over a large period of time.
Answer:
The correct answer is option d) "Only one of the two fusion proteins possesses a nuclear localization signal".
Explanation:
A nuclear localization signal or sequence (NLS) serves as an amino acidic tag that is recognized by the cell, and the cells responds by importing the protein into the nucleus. In this example a protein was divided into two segments and was used to generate two fusion proteins. Since only one of the two proteins was found in the nucleus, we can conclude that only one of the two fusion proteins possesses a nuclear localization signal.
Answer:
5. when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent
6.They are moving toward each other
7. The Nazca Plate is bounded on the west by the Pacific Plate and to the south by the Antarctic Plate through the East Pacific Rise
8.Convection currents in the mantle drive plate tectonics. Convection is the reason for ocean currents. Ocean currents result from two processes - the action of wind on the surface of the water, and from variation in water temperature that causes movement.
Both the mantle and ocean experience the heat transfer due to bulk movement of molecules within fluids such as gases and liquids, including molten rock; this is called, again, convection.
I think the correct graph would have light intensity on the x-axis (because light intensity is the independent variable) and a measure of photosynthetic rate (either O2 evolution or CO2 consumption) on the y-axis (because the rate of photosynthesis is the dependent variable)... hope this helps
