Vertebrates share many physical characteristics. all vertebrates a. have an internal skeleton that includes a backbone or spinal column. b.have a thick exoskeleton but not an internal skeleton c. have neither an exoskeleton nor an internal skeleton. d.have an internal skeleton but not a backbone or spinal column.

A. All vertebrates have an internal skeleton that includes a backbone or spinal column.

Vertebrates are large, active animals and are known to be the most organized organism on earth. They are the most advanced group of animals with the presence of the vertebrae, spinal cord and notochords. Also, they have skeleton and muscles that enable them to move around efficiently.

The following will contribute to water conservation :

Watering lawns at night, using low-flow faucets, and landscaping with native plants

Explanation:

Water conservation is the practice of using water efficiently to reduce unnecessary water usage.Water conservation is important because fresh clean water is a limited resource, as well as a costly one.Turn off the tap when you brush your teeth – this can save 6 litres of water per minute. Place a cistern displacement device in your toilet cistern to reduce the volume of water used in each flush.The benefits of Water conservation are: saving money, environment and energy. protecting the drinking water resources. reduce or minimize the pollution and health problems. Water conservation refers to the preservation, control and development of water resources, both surface and groundwater, and prevention of pollution.