Science

_________ causes stomatal closure.

• Abscissic acid

• Auxin

• Gibberellin

• Ethylene

Gibberellins induce stem elongation in

_________ plants.

• Avena

• Rosette

• Corn

• None

The hormone which has negative effect on apical dominance is _________.

• Ethylene

• Auxin

• Cytokinin

• Gibberellin

a star's apparent movement in relationship to other stars

• supernova

• pulsar

• nova

• parallax

A cloud of interstellar gases and debris is a _____

• nebula

• black hole

• super massive black hole

• super nova

Tags

NGSS.HS-ESS1-3

A collapsed star that has an extremely high amount of gravity (so much that even light cannot escape its pull)

• nebula

• black hole

• proxima centuri

• super nova

an existing star that flares up and becomes brighter than normal

• supernova

• pulsar

• nova

• parallax

a neutron star that spins rapidly on its axis

• supernova

• pulsar

• nova

• parallax

the death explosion of a star

• supernova

• pulsar

• nova

• parallax

__ stars are stars that regularly or repeatedly change in magnitude