In cell division one difference between animals and plants is that plant cells have a

1. which of the following is correct regarding opiates/opioids: a. they all have a natural component as a starting pointb. they have low addiction possibilitiesc. methadone binds to some of the same receptorsd. a and care correcte. all are correct

Acommon kind of mechanical weathering is called

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?