Which type of reaction is nacl + agno3 → nano3 + agcl?

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

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

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.