Under a microscope how could we identify the Prokaryotic cells from the Eukaryotic cells

This was the first living thing that existed. Its structure is so basic that the DNA is not inside the nucleus, they can survive to extreme environments...We are talking about:

This kingdom is the only one that transforms the light into food through a process called photosynthesis. This is the _____ kingdom

Amphibians are a subdivision of the vertebrates animals. They can live in the water and in the land, they have moist and soft skin. An example of amphibian is:

In order to keep balance on Earth, there are different reproductive strategies. The majority of fish lay thousand of eggs and don't take care of them. This is the:

The poison-dart frog is special. This frog only lays few offsprings and it takes care of them. In this case, this animal:

Bees and flowers have an interesting relationship. Bees help flowers to reproduce and flowers give pollen to the bees. This type of relationship is:

1. The biotics factors are the living things, such as mammal and trees. They can alter the numbers of specific specie, for example when the Spanish brought to America the Eucalyptus it altered the life cycle of other plants. The same happen with animals. Which of the next options is a biotic factor that affects the size of a population in a specific ecosystem?

Everybody can help to care for the environment. From the list choose ONE option you, as a student, can do.