Answer: Control Group is like a regular experiment
Explanation: Example:
A drop of mint juice with a mint gum will strengthen your breath.
Control Group- Mint gum
Independent Variable- Mint juice.
Dependent Variable- Breath (Being measured)
Answer:
a.they work together to allow gas exchange
Explanation:
the trachea helps transport air to the lungs, the lungs fill with air, finally the alveoli convert the oxygen to the bloodstream
Answer:
Homology
Explanation:
Homology refers to the presence of similar or shared body structures, body parts, gene sequences, proteins, etc. among various lineages. It represents divergent evolution of these lineages from a common ancestor.
Presence of various similar structures in human and salamander reflects the fact that these two species have shared a common ancestor during their evolution. The shared ancestry between human and salamander led to the presence of various homologous body parts and identical gene sequences in them.
1) - C) Algae growing on the glass
2) - A) Bacteria that lives in the intestine of a rabbit
3) - D) All the gray squirrels that live in a forest
4) - D) Density
Hope this helps!
