Isotonic Solutions are the best for animal cells
Answer:
The biologist is studying about the ecological community.
Explanation:
The ecological community refers to the community in which population of different types of species survives together. As the biologist is observing about the interaction of different populations of Pennsylvania region, it can be inferred that the he is studying about the ecological community of Pennsylvania region.
The population surving in the community interact with each other through different modes of interaction. It may either parasitic, or mutual, or competitive or predication or commercialism.
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Animals</h2>
Explanation:
A. Animals have muscle tissue, whereas other living things do not.
The character that contrasts animals with other living organism is the presence of muscle tissue. Muscle tissue is exclusively found in animals and are not found in any other kingdom of the living world.
Animals and many other living things posses multiple cells. Most of the cells in organisms are with nucleus.Most of the multicellular organisms have tissue level organization of the body.
Not all dogs hate bears but i have two awnsers.
1. the dogs are trying to protect their territory.
2. they think the bear might attack or harm their owner/ puppies.
The answer is A .
Hope this helps (:
