Organisms that live in desert and desert-scrub biomes have developed unique adaptations that aid in their survival. the sahara desert takes up ten percent of the continent of africa, and is the largest desert in the world. the species that live in the sahara are highly adapted to survive in the extreme conditions they live in. what morphological and physiological adaptations might be seen in the organisms that live in the sahara desert?

The “death throes” of stars are amongst the most complex phenomena in all of astronomy, and the “corpses” of stars amongst the most energetic and exotic objects in existence. beginning at the end of the core helium fusion stage in a star’s life, describe in detail the post-main sequence development of both (a) a 1.0 solar mass star, and (b) a 25.0 solar mass star. in what significant ways do they differ? what role does each of these types of stars play in the "star-gas-star" cycle and the evolution of chemical elements in our galaxy?

An object is moving east, and it’s velocity changes from 65m/s to 25m/s in 10 seconds. which describes the acceleration?

Determine the net charge of the predominant form of arg at (a) ph 1.0, (b) ph 5.0, (c) ph 10.5, and (d) ph 13.5