A skateboarder falls and lands directly on his buttocks and lower back. He does not feel too much pain and so he continues skating. After a couple of days, he begins experiencing right hip pain and notices his right foot and leg are rotated to the right. A doctor diagnoses muscle spasm.
Which of the following muscles is most likely causing the leg and foot rotation?.

A. quadratus lumborum
B. tibialis posterior
C. piriformis
D. adductor longus
E. sacrospinalis

Genetic diversity is the variation in the genes of an entire species. each circle represents a population of a particular species in different habitats. select the population with maximum genetic diversity

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences