The first life on Earth, a simple, single-celled prokaryotic bacteria, appeared on life approximately how long ago? A) 4 thousand years B) 4 million years C) 4 billion years D) 4 trillion years

Thinking About Newton's Third Law of Motion In the space provided, decribe how this concept explains the following events. 2. A squid squirts through the water without using its fins or tentacles.

As the solar system was forming about 4.5 billion years ago, Earth was being bombarded by small-diameter rocks, comets, and debris. What effect did this debris likely have on Earth's early surface?

If a person is severely dehydrated, their extracellular fluids will become hypertonic to the intracellular fluid. what do you predict will happen to the person's cells

What are the different factors that distinguish one biom from another

Read the following passage and identify the error. During germination, the fertilized egg begins to sprout and grow. Each seed contains an embryo, or tiny plant, and it needs the right condition to grow.

Photosynthesis cannot happen without

Select all that apply. Which fungi are used in medicine? yeast penicillium aspergillus Rhizopus stolonifera

Trying to demonstrate a fact by testing to see if the same result occurs repeatedly is___. A) concluding. B) experimentation. C) boring. D) theorizing

Why is zachs hair dark like his mothers and not bond like his fathers

If a sample of the heat-killed bacteria is treated with a DNase would you expect transformation to occur? Explain.