bio
ious
eco
conserv
ize
100

biology

the study of life

100

serious

need to thought carefully, not for fun

100

ecosystem

the whole environment all living things form

100

conserve

protect

100

personalize

make it about a person

200

biologist

a person whose job is to study life
200

mysterious

strange and interesting because you do not know much about them.

200

eco-friendly

good for the environment

200

conservation

protection

200

finalize

make it final; unable to change again

300

biodegradable

can be broken down by micro-life.

300

precious

important and valuable

300

ecology

the study of ecosystem

300

conservative

related to protecting something

300

visualize

to see in mind

400

biosphere

the part of earth's surface and atmosphere in which plants and animals can live

400

anxious

nervous

400

eco-tourism

travel without hurting the local environment

400

conservator

the person who pays attention to the protection of something

400

dramatize

exaggerate the reaction or emotion

500

bioluminescence 

the light some living creatures produce

500

previous

before

500

eco-activist

a person who work for improving ecosystem
500

conservancy

similar to conservation; protection

500

customize

make changes to suit the need of someone