Answer:
Four innovations are central nervous system, eyes, bilateral and hermaphrodites.
Explanation:
Innovations found in an ancient flatworm were the presence of central nervous system means head and a brain. The head had eyes which is the first in the animal world. Their body is bilateral means equally divided into two parts. They are also hermaphrodites means having male and female on a single organism which was not present at that time of animals.
I would most likely associate this with either pneumonia (acute) or if patient is older some form of COPD; possibly Chronic Bronchitis.
Answer: Medication can be tested on the cancer culture before being injected into the patient.
Based on the description of events, being that the lizard population appears to increase as soon as the snake population decreases, it appears that the snakes prey on the lizards. This suggests that the snake is a keystone species. A keystone species is one that has a dramatic effect on maintaining the balance of an ecosystem. As soon as the snake population decreases, major changes occur to the ecosystem, such as the lizard population increasing.
Therefore, the answer is D: <span>The snake is a keystone species in the ecosystem.</span>
C) water and energy ATP
The end products of respiration.
