Answer: B. Closed
In a closed circulatory system is the one in which the blood is circulated to all the parts of the body of the organism through vessels of different length and width. In this system the blood is pumped from the heart through blood vessels where it is transported to different organs and cells of the body instead of filling up the body cavity.
Answer:
A.The DNA in the parent cell nucleus makes a copy of itself and is then split between the two daughter cells during meiosis.
Explanation:
In order to determine this, we will require some pieces of meat, preferably taken from the same animal and from the same area and of similar size. After the pieces of meat are obtained, they are sealed in a container with equal quantities of meat tenderizer. Then, keep the containers in different temperatures.
After fixed time intervals, say 3 hours, record the appearance and texture of the meat. Repeat this until readings for 5-6 time intervals have been obtained.
The loss of photosynthetic organisms will eventually cause a problem for animals because photosynthetic organisms are autotrophs, the foundation of any energy pyramid and/or food chain, and when this foundation is gone there is a major loss of energy for all organisms that are consumers since 100% of the energy comes from producers.
