Answer:
What two features are first seen in the planarians? Planarians have bilateral symmetry, which is associated with the development of a head region, such as that seen in the flatworm. Another feature first seen in the flatworm is the possession of three cell layers: ectoderm, endoderm, and mesoderm (the middle layer).
Explanation:
Interneurons are sensory Afferent neurons. Specialized to detect stimuli and transmit information about them to the Central Nervous System. So i would go with A and B
Answer: The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Answer:
I'm really just guessing but, you should try (B)
The humerus and femur are joint bones, while vertebrae and carpals connect together to create a much bigger bone.
