Which evolutionary adaptations plants succeed and spread on land?
a. vascular tissue and seeds
b. spores and pine cones
c. small size and small seeds
d. cotyledons and nonvascular tissue

The evolutionary adaptation that helped plants succeed and spread on land was vascular tissue and seeds. 

Vascular tissue and seeds.

Krill are planktonic crustaceans found worldwide. If you are not aware, plankton is not a species but a collective term with a specified definition covering many organisms. It is not a specific description of any one animal, any animal group, or indeed even restricted to describing animals at all. It is a definition that covers ANY organism living in water that is subject to any currents or other forms of movement that carry them