Answer: Loss of biodiversity appears to affect ecosystems as much as climate change, pollution and other major forms of environmental stress, according to results of a new study by an international research team. ... Studies over the last two decades demonstrated that more biologically diverse ecosystems are more productive.hope this helps:)!
The last one, (leaving child home alone) as the others may not be favorable to the child one is for health, another is for health as well and the last is expected
