Recent questions in Science

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The oxidation of an alcohol can produce either an aldehyde or what?

asked Jan 2 in Science by IFYRussel191 (2.7k points)

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The ovules, which are the female gametophytes, are held in what organ?

asked Jan 2 in Science by TobiasTudawa (2.2k points)

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The overall purpose of the light-dependent reactions is to convert light energy into this?

asked Jan 2 in Science by KristopherMi (2.3k points)

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The ovaries produce estradiol and progesterone, which cause secondary sex characteristics and prepare the body for?

asked Jan 2 in Science by Candida6637 (2.2k points)

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The outermost layer of the leaf is the epidermis; it is present on both sides of the leaf and is called the upper and lower epidermis, respectively. botanists call the upper side the adaxial surface (or adaxis) and the lower side this?

asked Jan 2 in Science by DenishaChiod (2.3k points)

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The outer surface of the heart changes from positive to negative during what?

asked Jan 2 in Science by RosarioUsher (2.5k points)

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The outer planets are made of hydrogen and helium, so they are termed what?

asked Jan 2 in Science by EloiseLoxton (2.3k points)

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The outer layer of what anatomical structure is so tough that it keeps out most pathogens?

asked Jan 2 in Science by ValeriaStrom (1.9k points)

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The other ammonium ions are changed into nitrogen gas by what?

asked Jan 2 in Science by ChasityBelli (3.0k points)

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The ostwald process is the commercial method for producing what?

asked Jan 2 in Science by ElyseY075419 (2.7k points)

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The ostrich, kiwi, rhea, cassowary, and moa are examples of what kind of birds?

asked Jan 2 in Science by MarcellaFurp (2.2k points)

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The organs of female mammals that that produce eggs are called what?

asked Jan 2 in Science by DeangeloMull (2.4k points)

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The organ systems of the body work together to carry out life processes and maintain what?

asked Jan 2 in Science by ReinaldoBull (2.7k points)

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The ordovician-silurian extinction event is the first recorded mass extinction and the second largest. during this period, about what percent of marine species went extinct?

asked Jan 2 in Science by EdgardoHinch (2.3k points)

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1 answer 51 views

The orbicularis oris is a circular muscle that moves the lips, and the orbicularis oculi is a circular muscle that does what?

asked Jan 2 in Science by DarioLoftin2 (3.3k points)

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1 answer 13 views

The only things that affect the period of a simple pendulum are its length and the acceleration due to gravity. the period is completely independent of other factors, such as this?

asked Jan 2 in Science by IsobelMaggar (2.6k points)

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The only obvious difference between boys and girls at birth is what type of organs?

asked Jan 2 in Science by DirkCamidge (2.6k points)

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The only invertebrates than can fly belong to what broad group, which is highly successful?

asked Jan 2 in Science by NamSampson2 (2.1k points)

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The oldest fossil of land plants date back how many millions of years?

asked Jan 2 in Science by Valeria1137 (2.1k points)

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1 answer 54 views

The oceans affect earth’s atmosphere and influence its what?

asked Jan 2 in Science by Candida6637 (2.2k points)

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