Which of the following traits in humans can be affected b...
Which of the following traits in humans can be affected by environmental factors?
skin colour
eye colour
baldness
tongue-rolling
Correct answer is A
No explanation has been provided for this answer.
Which of the following relationships does not involve two organisms? ...
Which of the following causes pollution? ...
The relationship between a termite and the protozoam in its intestine is described as ...
Which of the following describes an example of fertilization in higher organisms ...
The structural similarities in Paramecium and Euglena are in the ...
The main function of blood in mammals is to transport ...
Which of the following bones forms a joint at the point labelled II in the diagram? ...