Answer:
The relationship between environment, variation and selection lay the foundation for natural selection and evolution.
Genetic variations are present among species due to number of reasons like recombination or crossing over during meiosis, mutations, random fertilization etc. These factors bring changes among the members of a species. Some of the species become better adapted to survive in a particular environment whereas some are not better adapted and become extinct over a period of time. The environment selects the organisms that are best adapted to survive and hence lead to variations.
Answer:
I'm say yes
Explanation:
because we had animals to survive off of
Answer:
first question:The nucleus is particularly important among eukaryotic organelles because it is the location of a cell's DNA. Two other critical organelles are mitochondria and chloroplasts, which play important roles in energy conversion and are thought to have their evolutionary origins as simple single-celled organisms
:second question: The DNA in prokaryotes is contained in a central area of the cell called the nucleoid, which is not surrounded by a nuclear membrane.
D. The tendency of a cell to maintain a stable internal environment.
As species’ offsprings have mutations, those mutations can either give them an advantage or disadvantage in survival. If a certain trait is better than the other, that means there is a higher number of survival rate for the species, allowing them to reproduce and make that trait common. After time the species will look differently than what it did in the prior generations. That is evolution.
