19. Family groups that out survive other family groups have what aspect that allows them to be more successful? Please help me no links or bots I will give brainliest no links to websites please because I keep getting those and I just wanted to answer

Structures in cells that carry out specific functions.

Variety of living organisms; includes genetic, species, and ecological types.

Select all the correct answers. for a claim about the natural world to be considered scientific, what attributes must it have? a). it must be open to modification if new evidence doesn't completely support it. b). it must be based on scientific observations that can be repeated in a controlled setting. c). it must be applicable to future events and occurrences. d). it must be consistent with only a small portion of relevant observations or data.