HELPP PLZZ!! What are the main functions of the human skeletal system?
Question 21 options:

To support the body, protect the organs, produce blood cells, and store calcium

To regulate the composition of body fluids by removing metabolic wastes and retaining a balance of water, salt, and other nutrients

To regulate and maintain bodily functions by producing hormones and releasing them into the bloodstream

To enable the diffusion of oxygen into the bloodstream and the removal of carbon dioxide from the bloodstream

Compare asexual reproduction to sexual reproduction

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d