sudden; abrupt; rapid; sharp; drastic; radical
speed; velocity; pace; velocity
but; however; provided that
population (of animals, etc.); population size; number of individuals
many; numerous; large amount of; large quantity of; frequent; common
reproductive (procreative) power; fertility
to make; to produce; to prepare (food); to brew (alcohol); to raise; to grow; to till
to be able (in a position) to do; to be up to the task; to be ready; to be completed; to be made; to be built; to be good at
but then; although; though; reasonable; natural; just
small fraction; small proportion
to remove; to eliminate; to eradicate; to exclude; to except
chief; main; principal; important
breeding; multiplication; increase; propagation; reproduction
this; this one; this person; now; this point (in time); here; used to stress the subject of a sentence
environment; circumstance
complex; complicated; intricate; mixed (feelings)
altitude; height; elevation; high-degree; high-grade; advanced
large quantity; massive (quantity); mass (e.g. mass production, mass transit, mass destruction)
exhaustion; consumption; using up; dissipation; waste
sexual reproduction; zoogamy
no; nay; well; er; you're welcome; not at all
eggs; egg; (hen's) egg; (an expert) in the making; beginning; origin
reproduction; duplication; reprinting
direct division (i.e. amitosis)
married couple; husband and wife; man and wife; his and hers; pair of objects, one larger (for man), one smaller (for woman)
activity; action; occupation; business; sexual intercourse; sex
like; similar to; (I) think (that); (I) have a feeling (that); feels like; feels similar to
fellow; mutual; companion; comrade
pseudo; quasi; false; suspected (case, e.g. of disease)
copulation (among animals); mating; treading; covering; serving
male; man; excellence; greatness; best (of)
cause; seed; variety; kind; counter for varieties
to multiply; to crossbreed; to cross-breed; to mix (e.g. paint colours)
true; real; genuine; proper; utter
meaning; significance; sense
mating; crossbreeding; cross-fertilization; cross-fertilisation
pair (esp. of mated animals); brace; couple; (anatomical) joint
fragment; one of the group or party
figure; form; appearance; dress; state; condition
like; similar to; as with; in the same way