Answer:
When a foreign antigen or pathogen enters our body, our immune cells detect it and generate a response by producing antibodies against it. Also, our immune cells generate memory cells so that our body remembers this pathogen if it invades the body afterwards. Hence, it takes less time for an organism's body to generate a response when a pathogen invades for the second time. The memory cells immediately detect the pathogen and a response is generated.
Answer:I'm almost sure it's b or d hope this helped
Explanation:
they should use a Light Microscope ,, that should be the right answer
Answer:
A sudden mass extinction such as a volcanic eruptions on a global scale(such as the Siberian Traps) may cause a sudden increase in diversity of the fossil record.
Explanation:
Previously unrecorded animals which were either eaten or decomposed over time, now may show up in the fossil record. Being buried in a layer of ash.
A cladogram shows the relationships between species regarding shared characteristics. In this case, A or D both seem to be possible correct answers. But, because it is likely that flies do share traits with butterflies and moths, answer D is not likely to be accurate (since it says "ONLY butterflies"). Hope this helps!
Answer: A. If moths undergo complete metamorphosis, we would MOST LIKELY infer that butterflies and flies do as well. (FYI flies do undergo complete metamorphosis).
