Answer:
D. All cells must be reproduced by another cell.
Explanation:
The cell theory has a couple key components, which are as follows:
#1. Cells are the basic unit of life.
#2. Cells have hereditary data that is passed down to their offspring.
#3. All cells come from preexisting cells.
#4. All organisms, both unicellular and multicellular, are made of one or more cells.
#5. Energy flows through cells.
#6. All cells have a similar composition.
Disrupted food webs, increased competition, disrupted life cycle events, forced relocation
Snow melting would be due to the temperature
Answer:
A. Advantageous alleles do not arise on demand.
Explanation:
According to theory of evolution, heritable traits in organisms can change across the generations leading to their evolution. There are many evolutionary forces like natural selection, mutation, genetic drift etc. However, it is incorrect to assume that the advantageous alleles will always be selected in evolution. Accumulation of random mutations, genetic drift or bottle neck effect are independent of this factor. Also, organisms with different degree of beneficial traits can coexist in same time frame. Just because humans evolved in a particular direction does not mean that other organisms will also do so.
