All animals A. have a blastula. B. have ectoderm, endoderm and mesoderm. C. reproduce asexually. D. are heterotrophs.

An adult bird perches on the edge of its nest. all of the baby birds open their mouths. what type of behavior is this?

What does low white blood cell count mean?

Excretion of wastes is important to maintaining homeostasis. which three are involved in the excretion of wastes in humans? A. Urinary, skeletal, reproductive B. Circulatory, integumentary, Muscular C. Digestive, respiratory, urinary d.

Most of the life we see, including plants and animals are classified in the domain Eukaryota. Eukaryotic cells are more complex than prokaryotes, they contain organelles, and the DNA is linear and found within the nucleus.

What is the basic unit of matter A. atomB. bacteriumC. cellD. molecule

The role of the excretory system is to rid the body of toxic waste products. Which of the following body systems also plays a direct role in removing waste products from the body? A) endocrine B) nervous C) respiratory D) skeletal

What supplement might be recommended by the food and nutrition board?

Which reflex constricts pupils when we view lose objects?

What survival stimulus makes an animal thirsty?

Factors that have contributed to heterogamy include