What is the advantage of the spiral valve in the shark's intestine?

Differences between compact bone and cartilage

Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations

Describe the impact of deforestation of both abiotic and biotic factors within the tropical rainforest.