A wide variety of organisms are classified as vertebrates, including mammals, birds, fish, amphibians, and reptiles. Vertebrates share many physical characteristics.
Which of the following is true about vertebrates?
OA.
Most vertebrates are born cold blooded then later become warm-blooded.
OB. Vertebrates are neither warm-blooded nor cold blooded.
C. Some vertebrates are warm-blooded while others are cold blooded.
OD. Most vertebrates are born warm-blooded then later become cold blooded.

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f