The two halves of the pelvic girdle are joined together at the?

I. Adoption of appropriate nocturnal habits ll. Burrowing lll. Adjusting their internal body temperature. IV Possession of many sweat pores.
Which of the above are ways in which desert animals adapt to extreme heat of the environment?

Low annual rainfall, sparse vegetation , high diurnal temperatures and cold nights are characteristic features of the?

The activity of an organism which affects the survival of another organism in the same habitat constitutes?

The average number of individuals of a species per unit area of the habitat is the?