When the quadriceps contact what also must happen at the same time?

a. the gastrocnemius must contract.

b. the hamstrings must relax.

c. the hamstrings must contact.

d. the gastrocnemius must relax.

Could someone me with number one you

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?