Answer:
A tissue.
Explanation:
A group of similar cells organized to perform a particular function is a <u>tissue</u>.
The most likely answer is B, increased significantly. This is so, because of the vast amount of cars, and factories, still in use.So, based upon the statistics and the levels of pollution all over the world, I would have to answer B.
<h2>Answer:</h2>
<u>Energy flows from the producer level to the consumer level.</u>
<h2>Explanation:</h2>
In any ecosystem, Producers are those species which make their own food. The best example is any kind of green plant. Green plants make their food by taking sunlight and using the energy to make sugar. On the other hand The organisms that obtain their energy from other organisms are called consumers. All animals are consumers, and they eat other organisms. So we can see that energy always flows from producers to consumers.
. I think that bivalves have evolved to have smaller head regions because they have also evolved to have bigger shells or valves than cephalopod
