N/E/B/A/C/A/L
BALANCE
A/N/R/D/E/A/N/G/R/E C/E/S/I/P/S/E (2 words)
ENDANGERED SPECIES
M/O/C/E/Y/S/T/S/E
ECOSYSTEM
L/O/C/A/R F/E/R/E (2 words)
CORAL REEF
R/U/N/A/L/T/A E/I/D/A/S/S/T/R (2 words)
NATURAL DISASTER