In "parasite", the last syllable rhymes with SEAT or SIGHT?
sight
Females have two X ___________. Males have one X and one Y.
chromossomes
In "prevalent" where does the stress fall?
the first syllable: pre
Bacteria can become _______ to antibiotics.
resistant
_______ break down the food we eat so it can be converted into energy.
enzymes
What does "keystone" mean?
something that is very important
The scientists studied as many as 1,130 ____ - from bacteria to primates - to understand how evolution built life forms that survived in the face of natural adversities.
species
A groundbreaking new study suggests that the future of drug making might lie with _________ chickens whose eggs have been engineered to produce human proteins.
genetically modified
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