Answer:
Embryological evidence
Explanation:
Deuterostomes is a group that includes echinoderms, hemichordates, and chordates. Although these animals exhibit a wide variety of body plans, they share a mouth secondarily formed during embryo development, which it is believed to be an evolutionarily derived character present between a common ancestor and all its descendants (i.e., a synapomorphy). This oral cavity is formed by the invagination of the ectoderm layer opposite to the blastopore of the gastrula.
Answer:
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D.<em> A formal method used to answer specific questions is Correct</em>
Explanation
In Simple terms, the scientific process is a way for scientists to study and learn things And to test new things, and Use the scientific method Steps Below
- Ask a question.
- Gather information and observe
- Make a hypothesis
- Experiment and test your hypothesis.
- Analyze your test results.
- Modify your hypothesis, if necessary.
- Present a conclusion.
- Retest
Therefore, The Answer is Option D.
As it moves around the
Earth, the side we can see gradually becomes more illuminated by direct sunlight. After a week, the
moon is 90 degrees away from the sun in the sky and is half illuminated, what we call "first quarter" because it is about a quarter of the way around the Earth.
