What does BOD5 refer to?
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Which of the following trees shed their leaves once in a year?
___________ is the most ecologically relevant environmental factor.
Which of the following is a Saprotroph?
In stems, the protoxylem lies towards the centre and the metaxylem lies towards the periphery of the organ. This type of primary xylem is called _____________.
The ozone layer is mainly found in the lower portion of the _______.
Mangifera indica is the scientific name of
If a star is bigger than Sun, but not more than twice as big, it will turn into a _______.