<span>The deposit often shaped like a triangle that forms where a stream enters a larger body of water is a:
Delta</span>
Answer:
dismissed the idea that species are constant and emphasized the importance of variation and change in populations
Explanation:
- Darwin and Wallace were the two scientists that contributed to the theory of evolution by natural selection.
- According to their ideas, the mechanisms that lead to evolution is natural selection.
- The idea for natural selection stems from the fact that the available resources are limited in nature and hence, there will be competition for survival and only the individuals that will have heritable traits that will favor their survival under such competition would be able to live and thus, produce more offsprings with similar traits and hence, this will lead to evolution.
- This theory of natural selection thus emphasized that the traits possessed by organisms are not constant but are variable and the populations constantly change over time.
The answer that best completes the sentence given above is EVOLUTION. When we say natural selection, this is the process whereby organisms try to adapt to their environment in order to survive. In this case, why this leads to evolution because the physiological features of the organism need to adapt to a certain environment, thus, physiological changes are made. Hope this answer helps.
Chromosome are thread-like structure of DNA and protein found in the nucleus of living cells. They carry the genetic material.
Chromosome cross over occurs between prophase 1 and metaphase1 of cell division during meosis. It is the process in which homologous chromosomes pair up with each other and exchange different portion of their genetic material thereby forming recombinant chromosomes.
As the cell division progresses, the pair of homologous chromosomes are divided in half to form haploid cells. This random process is called assortment.
Mutation occurs when there is any form of alteration in the genetic sequence of a chromosome. During cell division, chromosomal mutation can occur. It can be in form of insertion, duplication, deletion or inversion.
Reactants = glucose, oxygen
Products = water, carbon dioxide, Energy in ATP