Answer:
A. Nerve signals from the brain are controlling the arm.
Explanation:
Bec ause it starts at the brain and to the arm/hand!.
Answer:
The ancestors of mammals diverged from ancient synapsids (reptiles).
Explanation:
The mammals have known to be evolved from a group of reptiles. These group of reptiles were known as synapsids. In fact, some scientists consider mammals as the only living synapsids. The close relativity between reptiles and mammals can hence be seen because they have common ancestors. The synapsids were known to inhabit the earth during the Permian Period.
The scientists, however, do not know from which reptiles exactly did the first mammals grow.
The phosphorus cycle does not include an atmospheric component because phosphorus does not cycle through the atmosphere. In comparison, important processes of the carbon and nitrogen cycle occur in the atmosphere.
Crop is the part of the digestive
system you would see in a cross-section anterior to the gizzard. The crop is a
large dilation of the oesophagus and is located just outside the body cavity in
the neck region. The crop stores swallowed feed and water which are then moved
to the rest of the digestive tract while the gizzard is located after the
proventriculus behind the left lobe of the liver. The gizzard contains hard
objects that help in the disintegration of food.
The answer for this question is True