The 6th mass extinction started around 10,000 years ago, and is still happening today. who/what do you think is the greatest cause of this current mass extinction?

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these