Eurythermal animals and plants are those which
Can tolerate only a small variation in temperature
Can tolerate large variation in temperature
Can not tolerate any change in temperature
Are affected by temperature
A person at $15000$ feet above sea level develops certain symptoms in $8-24 $ hours, these are
Thick cuticle, sunken and scotoactive stomata, $CAM$ photosynthesis and conversion of leaves into spines are some of the important characters of
Sheet erosion is caused by
Which of the following is an indirect ecological factor
Biological concept of species is mainly based on