According to the theory of organic evolution, all living organisms are related, and they descended with some modifications from organisms that lived in the past. a) trueb) false

True

Explanation:

According to the theory of organic evolution, all organisms are related to each other and they all are descendants with some modification from the organism that lived in the past. The evidence of this theory can be seen in existence in homologous organs in different species for example wings of bird and hand or humans.

This homology proves that they shared the common ancestor in the past and they are descendants with some variation and modification which make them appear different from each other. Therefore the statement is true.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation:

well, i believe that the answer is 2. : 3