Answer: Natural Selection is the (natural) process in nature whereby organisms (plants, animals, etc.) that are better adapted to survive and thrive in their environment, are more likely to survive in order to breed/reproduce and pass on their own genes and characteristics. These characteristics can be physical or behavioral.
Artificial selection is where man, instead of nature, determines which characteristics they would like to hone. In the case of crops, edible, tasty, easy to cultivate crops were chosen above harder to grow crops. Animals kept for meat and other products, were selected based on how much milk, wool, meat, etc. could be produced. Health was also a factor, as sickly animals are troublesome (and potentially unsafe to utilize their products). In the case of domesticated pets, let us consider the dog, originating from domesticated wolves. The more easily trained, protective, better natured wolves were chosen to continue to line of species and the undesirables discarded.
Explanation:
Answer:
Brain is composed of three main parts: cerebrum, cerebellum and brain-stem.
Stimulus interpretation and speech are controlled by cerebrum. It is the biggest part of brain and performs important functions.
While movement of muscles, walking and movement of tongue is controlled by cerebellum. It is present under cerebrum and performs functions associated with coordination.
Respiratory activities, hunger and other automatic functions of body are controlled by Brain-stem. It connects cerebrum and cerebellum to the spinal cord.
Rhodophytes is the phylum of algae that stores food in the form of floridean starch.
hope this helps
