legendary

(a)  

a flock of birds

(a)  

spectacle

(a)  

came to an end 

(a)  

premise

(a)  

cloning technology 

(a)  

fertilise

(a)  

embryo

(a)  

abundant

(a)  

cutting-edge technology

(a)  

genetic scientist

(a)  

strive

(a)  

carnivore

(a)  

fill the niche

(a)  

debilitating

(a)  

tumour

(a)  

syndrome

(a)  

notorious

(a)  

contagious cancer

(a)  

pop up

(a)  

burn out

(a)  

subject

(a)  

strand

(a)  

hybrid

(a)  

scatter

(a)  

disturbance

(a)  

wreck

(a)  

stagnant

(a)  

the woolly mammoth

(a)  

cold resistance

(a)  

genetic trait

(a)  

tundra

(a)  

insulating fat

(a)  

boreal forest

(a)  

mammal

(a)  

punch holes

(a)  

knock down trees

(a)  

mitigate emissions

(a)  

permafrost

(a)  

prospect

(a)  

de-extinction

(a)  

moral hazard

(a)