Ferns use the starch-filled cells of this structure for storage.

How does radioactive decay help scientists determine the age of the earth?

viktelen [127]

Answer:

Radioactive isotopes break down in a predictable amount of time, enabling geologists to determine the age of a sample using equipment like this thermal ionization mass spectrometer. determining the absolute age of something, usually through isotope analysis; yields an actual number.

Explanation:

I hope this helps!

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3 years ago

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What was hurricane Floyd's sea surface temperature?

Readme [11.4K]

Hurricane Floyd was a very powerful Cape Verde hurricane which struck the east coast of the United States. It was the sixth named storm, fourth hurricane, and third major hurricane in the 1999 Atlantic hurricane season. Floyd triggered the fourth largest evacuation in US history (behind Hurricane Irma, Hurricane Gustav, and Hurricane Rita) when 2.6 million coastal residents of five states were ordered from their homes as it approached. The hurricane formed off the coast of Africa and lasted from September 7 to September 19, peaking in strength as a very strong Category 4 hurricane—just 2 mph short of the highest possible rating on the Saffir–Simpson Hurricane Scale. It was among the largest Atlantic hurricanes of its strength ever recorded.

Hurricane FloydCategory 4 major hurricane (SSHWS/NWS)

Hurricane Floyd at peak intensity on September 13, north of the Dominican Republic

FormedSeptember 7, 1999DissipatedSeptember 19, 1999(Extratropical after September 17)Highest winds1-minute sustained: 155 mph (250 km/h)
Lowest pressure921 mbar (hPa); 27.2 inHgFatalities74 totalDamage$6.5 billion (1999 USD)Areas affectedThe Bahamas, East Coast of the United States, Atlantic CanadaPart of the 1999 Atlantic hurricane season

Floyd was once forecast to strike Florida, but turned away. Instead, Floyd struck The Bahamas at peak strength, causing heavy damage. It then paralleled the East Coast of the United States, causing massive evacuations and costly preparations from Florida through the Mid-Atlantic states. The storm weakened significantly, however, before striking the Cape Fear region, North Carolina as a very strong Category 2 hurricane, and caused further damage as it traveled up the Mid-Atlantic region and into New England.

The hurricane produced torrential rainfall in Eastern North Carolina, adding more rain to an area already hit by Hurricane Dennis just weeks earlier. The rains caused widespread flooding over a period of several weeks; nearly every river basin in the eastern part of the state exceeded 500-year flood levels. In total, Floyd was responsible for 57 fatalities and $6.5 billion (1999 USD) in damage. Due to the destruction, the World Meteorological Organization retiredthe name Floyd.

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3 years ago

Active and passive transport of solutes across a membrane typically differ in which of the following ways? A] Active transport i

olya-2409 [2.1K]

Out of the choices given, active and passive transport of solutes across a membrane typically differ because active transport always involves the utilization of cellular energy, whereas passive transport does not require cellular energy. The correct answer is B.

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4 years ago

Students observe several slides of tissue cross-sections under the microscope. They are asked to develop a key system to classif

notka56 [123]

As students observe several slides of tissue cross-sections, one simple key they can use to determine if the slides come from dicots or monocots is to analyze the vascular bundles.

A vascular bundle is described as a portion of the transport system of vascular plants. These bundles are microscopically different in Monocots than they are in Dicots, which will allow students to tell them apart through the tissue slides.

The difference is that monocots contain randomly scattered bundles located throughout the stem. On the other hand, dicots have their vascular bundles more neatly organized in concentric circles. These microscopic differences can serve as a key to be used by the students to classify the tissue samples they are studying.

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3 years ago

Humus consists of _____.

natta225 [31]

Humus is a dark organic matter that is an important part of your soil
Humus consists of decomposing organic material. The process of creating humus is called Humification: decomposition of organic matter into smaller and smaller molecules by the micro-organisms in the soil (mostly bacteria and fungi).

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3 years ago