I think its the first one
Answer:
A balance between Osteoblasts and osteoclasts maintain bone tissue.
Explanation:
Osteoblasts are bone making cells, osteoclasts resorb or break down bone, and osteocytes are mature bone cells.
9. It is a warm summer night, 32oC, with the relative humidity at 100%. During the night, the air temperature drops to 18oC. You would expect to see___on the ground in the morning.
A) dew
10. Scientists believe that during the Late Cretaceous period, many small seas dried up and new mountains began to rise. Which would MOST LIKELY cause them to believe the temperature decreased during this time?
A) The absence of fossils of warm-weather plants.
11) A hurricane is MOST LIKLEY to occur in an area
A) near warm water.
12) A team of archaeologists excavating a sedimentary rock layer come across some primitive hunting tools used by early humans. As the dig progresses, they unearth the fossilized remains of a dinosaur from another layer of the sedimentary rock. Why do these discoveries indicate that the rocks were formed over millions of years?
C) Dinosaurs became extinct millions of years before humans appeared.
Hope I helped!
The pulmonary vein carries oxygenated blood from the lungs to the left atrium
Explanation:
who many chambers does the heart has
