The elbow is __ to the index finger. The stomach is __ to the neck.
The brain is __ to the spinal cord.
The lungs are __ to the heart.
The shoulder is __ to the esophagus.
The toes are __ to the ankles.
The trachea is __ to the clavicle (collarbone).
The spine is __ to the liver.

The body is protected against harmful flu viruses by

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.