Which of the following vertebrates has the simplest&...
Which of the following vertebrates has the simplest heart structure?
reptile
fish
mammal
amphibian
Correct answer is B
No explanation has been provided for this answer.
The kind of teeth used for tearing food materials is the ...
What is the main function of the organ? ...
Which of the following features is not characteristic of arteries? Arteries ...
The least evidence in support of the theory of evolution is provided by the study of ...
Which of the following characteristics do fungi share in common with animals? ...
What name is given to a sudden change in a gene or chromosome? ...