Answer:
B. Certain Proteins
Explanation:
Hope my answer has helped you!
A i think, i mean you get both
1. skin tears saliva stomach acid with all produce friendly bacteria. 2. active immunity is when one has a disease or live pathegon and is immune to it afterwards. unlike passive immunity
Answer:
375 million-year-old fish, a large scaly creature not seen before, that they say is a long-sought "missing link" in the evolution of some fishes from water to a life walking on four limbs on land.
In addition to confirming elements of a major transition in evolution, the fossils are widely seen by scientists as a powerful rebuttal to religious
Explanation:
on closer examination, scientists found telling anatomical traits of a transitional creature, a fish that is still a fish but exhibiting changes that anticipate the emergence of land animals — a predecessor thus of amphibians, reptiles and dinosaurs, mammals and eventually humans
Answer:
B. the nervous system
Explanation:
The nervous system is one of the body systems that has to do with the passing signal information to and fro the BRAIN and other sensory organs e.g eyes, nose, ears etc. The nervous system is what causes an individual organism to sense and respond to environmental stimuli by passing chemical signals to the brain and back to the site of effect.
According to this question, a frog is able to leap away from a snake because danger is sensed and responded to by the NERVOUS SYSTEM. Information in form of chemical signals (impulses) are passed across the brain of the animal of a possible threat, which then sends back information for the frog to react to such danger by leaping away.
