Determine if each of the following statements is a well-written, testable hypothesis. Explain your answers.
1 answer:
A) Soil pH is a characteristic that describes the relative acidity or alkalinity of the soil of the Soils are considered acidic below a pH of 5, and very acidic below a pH of 4. Conversely, soils are considered alkaline above a pH of 7.5 and very alkaline above a pH of 8
B) While there's logic in that, dogs don't just love treats, they also love new treats. Most dogs get very excited at the sight of a new treat even if the old one is still their favorite. Keep giving them the old ones as well if they prefer it, but also add a little diversity of a they be grateful
C) the important meeting one whose outcome affects you and your team the after it happens. When you’re overlooked for a meeting it feels bad personally and professionally
D) the long term running changes your vascular system; your heart size grows, the heartbeat rate decreases and your arteries widen. They may get harder with the build up of plaque as the studies indicate, but it's not clear that that's a bad thing
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Answer:
a) Salamanders are a sister group to the group containing lizards, goats, and humans.
Explanation:
A phylogenetic tree is a diagram that represents the evolutive relations between organisms. As you can see in the attached image, the branch that contains salamanders and the group containing lizards, goats and humans, come from the same point as they are in the group 2a and 2b, because of this <em>Salamanders are a sister group to the group containing lizards, goats, and humans.</em>
b) Goats are in the same level as humans because they come from the same point, so they are more close between them than with salamanders.
c) Lizards are more closely related to salamanders than humans, because humans are in an upper branch, then is not true that salamanders are closely related to lizards as to humans.
d) A basal taxon is a lineage that evolved early, so it separates from the tree in an early stage, as it happens to the salamanders that separated early but not humans.
Then the correct answer is a)
<em>Salamanders are a sister group to the group containing lizards, goats, and humans.</em>
