Question

What are the two types of evolution that had to occur in order for life to begin on Earth?

a)biological evolution and marine biology
b)chemical and biological
c)chemical and marine biology
d)geographical and biological

Answer 1

Life on Earth began with chemical evolution leading to self-replicating molecules, followed by biological evolution, which involved the diversification of life through natural selection.

Step-by-step explanation:

The two types of evolution that had to occur for life to begin on Earth are chemical and biological evolution. Chemical evolution refers to the formation of complex organic molecules from simpler substances before the existence of life. Over time, these complex molecules began to replicate themselves, leading to the first simple life forms. Biological evolution took over once life had begun, with the process of natural selection driving the diversification and increasing complexity of life forms, as demonstrated in the Earth's phylogenetic tree.

Through the vast timescale of Earth's history, life started with single-celled organisms and eventually evolved into more complex multicellular organisms. This deep time evolutionary process was interspersed with significant events, such as mass extinctions and environmental changes, which helped shape the current diversity of life we observe today.

Answer 2

Answer: B

Step-by-step explanation:

This is because...

(A) - This talks about biological evolution (The evolution of life) and Marine Biology. The biological evolution part does make sense, because the entire thought of biology is the study of life. But, the marine biology part does not make sense. Marine biology is the study of water life, it does not talk about anywhere the evolution for life on Earth to occur, because even now there are marine biologist's, but, there is already life on earth, so it is not A.

(B) - This is the answer because it is the only one that makes true sense. This is because there are two answers, chemical and biological evolution. As stated before, it is a good explanation to say that biological evolution is a key factor for life to begin on Earth. But that is only one half of the answer. The other half, chemical evolution... is why this answer is correct. Chemical evolution, is the talking of how certain chemicals were able to bond to each other and create a mixture of those simple chemicals which led to the creation of cells. As you may know, cells are in all forms of life, they are the smallest form of it. So, this explains why chemical evolution was needed for the start of life.

(C) - Now this answer would make sense, because of the chemical evolution part, which was explained in the previous answer, but the other half unsettles it. As stated below, marine biology is the study of water life, not used for a factor of the start of life, so this is not an answer.

(D) - This is geographical and biological evolution. As stated before, the biological evolution part makes sense, but the geographical part does not. Geographical evolution is the evolution of the interconnection of life on Earth and ... Earth itself. It does not talk about how life depended on this factor to start on Earth.