Why do different organisms have different types of heart

Which statement explains how gravity and intertia work together

The direct energy source that drives atp synthesis during respiratory oxidative phosphorylation is

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?