Hydrogen sulfide gas
Volcanic gases are gases from volcanoes. These are gases trapped in the spaces between volcanic rocks. The sources of this gases are the recycled constituents of the earth mantle, assimilated constituent of earth crust and groundwater, earth atmosphere. The principal component of volcanic gases are water vapor, carbon dioxide, sulfur dioxide , hydrogen sulfide. Gases varies depending on the volcano, water vapor is the most common among the gases.
Answer:
a) 
b)
c) 
Explanation:
Given ,
Frequency of white flower plant (
) is 
Thus, frequency of dominant white allele (
) is equal to 
As we that, as per Hardy-Weinberg equilibrium equation
Substituting the value of in above equation, we get
a) As per Hardy-Weinberg equilibrium equation
Substituting the given and calculated values in above equation, we get -
b) The frequency (decimal form) of the dominant allele
c) number of homozygous purple flower plants
frequency of purple flower plants (
) 
Number of flowers
The answer is B. Cell membrane and cytoplasm
Answer:
Organism having the suitable traits appears more in the population.
Explanation:
Natural selection is a non-random process in the biological traits becomes less or more common in the population due to the different rate of survival of their bearer or their differential reproduction.
Natural selection leads to evolution because those organisms are selected to survive and reproduce which are having those traits that are better suited to a certain set of environmental conditions over others. As a result, the number of these organisms increases over time and they appear more in the population.
So natural selection leads to evolution as an organism having the suitable traits appears more in the population.
Answer:
The answer is A
Explanation:
The hydrosphere provides almost all the water at or near the earth's surface. It is important to the biological and geological processes as it is a continuous cycle of recycling water between the oceans and atmosphere.
