What are the jawline structures of the insect group of arthropods called

a. thorax

b. antennae

c. mandibles

d. ring canal

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

What part of the ear is names after tools, such as the hammer and the anvil?