Answer:
Flexion of the hip joint occurs when the femur (upper leg) moves forwards, which happens when long jumpers land or at the end of kicking a ball.
Explanation:
Answer:
A. Many dinosaurs were present in upper layers of rock strata, but not in lower layers.
Explanation:
In my opinion, this is the best possible answer.
Answer:
The original phagocyte secretes cytokines that attract other phagocytes
Explanation:
Before phagocytosis occurs and with the presence of an original phagocyte at the scratch site mostly a macrophage (also a phagocyte), chemical signals signals are given off to attract phagocytes to the scratch site.
These chemical signals may be cytokines that are given off by macrophages located in the tissue near the infection site etc. These cytokines produced can then stimulate the recruitment of phagocytes including the neutrophils and monocytes from the blood.
<span>Solar Flares-
A brief eruption of intense high- energy radiation from the sun's surface, associated with sunspots and causing electromagnetic disturbances in the earth, as with radio frequency communications and power line transmissions.
</span>
Answer:
Nitrogen
Explanation:
All living organisms need nitrogen in order to build proteins and build DNA.
Some animals (most) get nitrogen by eating plants I believe.
