Which of the following group of bones in the human body categorized according to shape is correct? Group of answer choices

skull bones-flat bones

arm and leg bones-short bones

coxal bone- short bone

wrist and ankle -long bones

Study this image which statement best describes the rock shown check all that apply

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos

Approximately how many times does an average human heart beat in a lifetime?