Answer:
13
Explanation:
The atomic number for Aluminum (Al) is 13. If you have access to the periodic table, this would've taken a few seconds.
Answer:
Five types of evidence for evolution are discussed in this section: ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA, and similarities of embryos. You have read that Darwin collected many specimens of fossils on his trip. These specimens provided evidence that species existing in the past were very similar to species living during Darwin's time.
<span>The energy pyramid is shaped like a triangle to show how not all the energy of one organism transfers to the next level. The triangle decreases in size going up as does the amount of energy transferred. A graphical model that is shaped like a pyramid to show how the energy flows through a food chain, how the amount of energy is decreasing and becoming less available for organisms as it enters each trophic level, and how much of the energy in the ecosystem is lost to the atmosphere as heat.
</span>
Explanation:
Thermophilic bacteria: a new cause of human disease. ... These bacteria are all gram-negative, nonfermentative, nonsporulating rods, most of which grow better at 42 or 50 degrees C than at 35 degrees C. Some of the bacteria could be implicated as the etiological agents for meningitis, endocarditis, and septicemia.
