By being in the same area or Causing weathering at the same time or place
Answer:
<h2>A</h2>
Explanation:
1. Nucleus is a ball like structure which is found in the center of the cell only in eukaryotic cell, true nucleus is absent in prokaryotes.
2. Nucleus contains nucleic acid and is have double membrane which contain pores though which transport of molecules occurs.
3. DNA replication , transcription and RNA splicing occur in the nucleus.
Answer - B
Fish and reptiles both are ectothermic but fish have gills and reptiles have lungs. Ectothermic organisms do not have an internal mechanism of regulating their body temperature and are dependent on their atmosphere for temperature regulation. Fish, reptiles and invertebrates are examples of ectothermic organisms.
Have you ever watched a caterpillar turn into a butterfly? If so, you're probably familiar with the idea of alife cycle<span>. Butterflies go through some fairly spectacular </span>life cycle<span> transitions—turning from something that looks like a lowly worm into a glorious creature that floats on the breeze. Other organisms, from humans to plants.</span>
They were able to show how to produce the best plant with the right amount of light that the plant is exposed to.
They were also able to show how to draw blood plasma from the blood by studying its response to various stimuli.
