The diagrams show objects' gravitational pull toward each
other
Which statement describes the relationship between
diagram X and Y?
O Gravity attracts only larger objects toward one another
O Gravity attracts larger objects only if they are close to
one another
If the masses of the objects increase, then the force
between them also increases
If distance between the objects increases, then the
amount of force also increases.

PLEASE ASAP

Which organelle releases chemicals that break down large food particles into smaller ones?

There are only about 250,000 known fossil species. true or false

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).