Answer the following question given this paragraph: By about 320 million years ago, early amniotes had diverged into two groups, called synapsids and sauropsids. Synapsids were amniotes that eventually gave rise to mammals. Sauropsids were amniotes that evolved into reptiles, dinosaurs, and birds. The two groups of amniotes differed in their skulls. The earliest known reptile, pictured in Figure below , dates back about 315 million years. Q: How many years ago did early amniotes diverge into two groups? Choices: - .175 million years - .416 million years - 20 million years - 320 million years A:
320 million years
(Question)
Answer the following question given this paragraph: The cell wall is a rigid layer that surrounds the plasma membrane of a plant cell. It supports and protects the cell. Tiny holes, or pores, in the cell wall allow water, nutrients, and other substances to move into and out of the cell. The cell wall is made up mainly of complex carbohydrates, including cellulose. Q: What is a rigid layer that surrounds the plasma membrane of a plant cell? Choices: - the nucleic wall - the cell center - mitochondria - the cell wall A:
(Answer)
the cell wall
Ques: Answer the following question given this paragraph: Reporting Scientific Work Whether scientific research is basic science or applied science, scientists must share their findings for other researchers to expand and build upon their discoveries. Communication and collaboration within and between sub disciplines of science are key to the advancement of knowledge in science. For this reason, an important aspect of a scientist's work is disseminating results and communicating with peers. Scientists can share results by presenting them at a scientific meeting or conference, but this approach can reach only the limited few who are present. Instead, most scientists present their results in peer-reviewed articles that are published in scientific journals. Peer-reviewed articles are scientific papers that are reviewed, usually anonymously by a scientist's colleagues, or peers. These colleagues are qualified individuals, often experts in the same research area, who judge whether or not the scientist's work is suitable for publication. The process of peer review helps to ensure that the research described in a scientific paper or grant proposal is original, significant, logical, and thorough. Grant proposals, which are requests for research funding, are also subject to peer review. Scientists publish their work so other scientists can reproduce their experiments under similar or different conditions to expand on the findings. The experimental results must be consistent with the findings of other scientists. There are many journals and the popular press that do not use a peer-review system. A large number of online openaccess journals, journals with articles available without cost, are now available many of which use rigorous peer-review systems, but some of which do not. Results of any studies published in these forums without peer review are not reliable and should not form the basis for other scientific work. In one exception, journals may allow a researcher to cite a personal communication from another researcher about unpublished results with the cited author's permission. Q: What fluid is most prevalent in your body? Choices: - cold - liquid - Coolant - water A:
Ans: water
(Q).
Answer the following question given this paragraph: Describe at least two major changes to the animal phylogenetic tree that have come about due to molecular or genetic findings. How is it that morphological data alone might lead scientists to group animals into erroneous evolutionary relationships? 26. Briefly describe at least two theories that attempt to explain the cause of the Cambrian explosion. How is it that most, if not all, of the extant animal phyla today evolved during the Cambrian period if so many massive extinction events have taken place since then?. Q: Most, if not all, of the extant animal phyla today evolved during the cambrian period, yet many of what devastating events have taken place since then? Choices: - life extinctions - earthquakes - starvations - mass extinctions A:
(A).
mass extinctions
Ques:Answer the following question given this paragraph: Q: What is the process by which plants make their own food? Choices: - ATP cycle - respiration - mitochondrial process - photosynthesis A:

Ans:photosynthesis
Ques:Answer the following question given this paragraph: Point masses are structureless particles that cannot spin. Q: What type of masses are structureless particles that cannot spin? Choices: - weightless masses - turning masses - inertial mass - point masses A:

Ans:
point masses