II and IV are the true statements.
Explanation:
As the glucose molecules are too large it is not allowed by the cell membrane to pass through general diffusion. It requires "facilitated diffusion" to "move in and out" of the cell. In this passive mode of transport, the protein of carrier is used to pass the molecules through the membrane without using the energy of the cell rather the concentrate gradient provides energy to make the molecules move. This gradient allows the molecule to pass from high concentration area of the cell to the low concentration.
Coal is the answer uranium and petrolium are products
Speciation is founded on the principle of genetic mutations and
<span>
speculated genetic possibilities</span>
Answer:
D). Choice 2 and 3
Explanation:
Given the options above, the limiting factors are both the "Amount of water in the lake" and the "Temperature of the lake"
This is because the amount of water in the lake can only carry as much of the number of fishes as possible it can contain or sustain. This implies that the higher the water content in the lake the higher the number of fishes it can contain and vice versa.
Also, the temperature of the lake is a limiting factor because the temperature of the lake supports the light penetration to the fishes in the water. Should the temperature increases beyond the highest level the water can support, the fishes will die.
