Answer:
on bird beaks?
Explanation:
I do know that the bird's beaks that they are born with will in time evolutionize their beaks size and strength to prey on the type of fish for food over time.
Hope I'm making sense...good luck.
<span>Answer: Opening of Na+ and K+
Explanation:
Acetycholine binding opens Na+ and K+ ion channels in the receptors that allow simultaneous passage of Naâş into the muscle fiber and Kâş out of the muscle fiber. More Naâş ions enter than Kâş ions exit, which produces a local change in the membrane potential called the end plate potential.
Binding of acetycholine to receptor proteins opens Na+ and K+ channels resulting in jump in resting membrane potential(RMP) from -90mV to +75mV forming an end-plate potential (EPP).</span>
Answer:
A. The nervous system collects and responds to information about
the internal and external environment.
Explanation:
option 2 seems appropriate for me!
Answer:
C. 1.23 g/ml
Explanation:

Mass of rock = 80g
Volume of rock = final fluid volume - initial fluid volume
Volume of rock = 265 cm³ - 200 cm³ = 65 cm³


1 cm³ = 1 ml
Therefore, density of the object = 1.23 g/ml