Answer:
A. Quaternary
Explanation:
We came around Quaternary time frame. This period is called the "Age of Humans"
Nancy the neuron has just fired an action potential. Now she cannot fire another action potential until she resets her electrical potential. She is in a refractory period. The refractory period starts after the hyper-polarization of the neuron. In this phase the neurons is inhibited of generating further action potentials, and the recovery to resting potential of the neuron membrane begins with the potassium ions slowly leaking into the cell.
Answer:
temparate deciduous
grasslands
tropical rain forest
taiga
tundra
grasslands
tropical rain forest
temperate deciduous rainforest
Explanation:
There should be 36 that do not include -ium
Answer:All the spheres interact with other spheres. For example, rain (hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and rivers that provide drinking water for wildlife and humans as well as water for plant growth (biosphere).
Explanation: hope this helps