Spring is the mating season for a lot of animals. For dogs, though, they dont mainly want to mate in spring. An dog usually goes into heat every 6 months, so it could be in any season.
Answer:
D
Explanation:
Every one of these resources are critical to our survival
Oxygen is an electronic which can be defined as pure substance..we breath in oxygen and breath out carbon dioxide
Answer: Land: Denser materials sank to the earths center and less dense materials were forced to the outer layers, forming a thin crust. Atmosphere: Less dense molecules rose to the surface. Oceans: As earth cooled, water vapor condensed to form rain which lead to the formation of oceans.
Not much because the baby's have alot of bones but when it comes to nerves it is a little bit babys need time to regenerate