Which biome has the following abiotic factors? • cold temperatures
• partially frozen soil
varying sunlight throughout the year
• precipitation predominantly in the form of snow
(1 point)
O
rainforest
O
grassland
O
tundra
desert

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.