Answer:
The early Earth was very different from our Earth today.
Explanation:
Earth's first atmosphere had lots of water vapor but had almost no oxygen. Later, frequent volcanic eruptions put several different gases into the air (Figure 12.13). These gases created a new type of atmosphere for Earth.
The membranes that surround and protect the brain and spinal cord are called meninges.
Zambia
The other three are already well established.
Answer: yes
Explanation:
Euglena belong to the kingdom Protista, and this kingdom is categorized as unicellular beings.
