<span>d. All of the above
These behaviors;
Spreading wings
Flattening feathers
panting
are all evolutionary process to maintain body temperature. Birds are warm-blooded animals. Also known as </span><span>homeotherms, which is defined as having the constant body temperature. This is a vital function for the survival of the specie.
</span>
----
<span>c. are hollow
</span>
The bones of most birds are hollow in order for the weight of the birds to be light for them to fly.
After a large meal, the pancreas helps by producing insulin, which helps break down sugars.
100 centimeters make up one meter
Answer:
ribulose bisphosphate carboxylase (RuBisCO)
Explanation:
The Calvin cycle is a process utilized to ensure carbon dioxide fixation. ... The carbon dioxide is combined with ribulose 1,5-bisphosphate to form two 3-phosphoglycerate molecules (3-PG). The enzyme that catalyzes this specific reaction is ribulose bisphosphate carboxylase (RuBisCO).
C, energy
to regenerate ATP is the chemical energy stored in food like glucose