I don’t understand this can someone help me

Some plants release toxic chemicals that kill or harm nearby plants. what type of example is this? 1 cooperation 2.mutualism 3.competition or 4.parasitism

Inquiry is a process prompted by a _

One special property of mica that would you tell it apart from any other mineral is that it a) bubbles in acid. b) breaks into thin sheets. c) is the only gray mineral. d) can scratch all other minerals.