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3 years ago

If a mineral crystal starts out with 160 parent isotopes

1 answer:

8 0

Rocks and Minerals ... Each unstable isotope has its own decay rate known as its half life. ... For example starting with 100% of a parent isotope after one half-life only 50% of the parent isotope would remain, after a second half-life half

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Population growth in Europe is _____. increasing decreasing stable unable to determine from information in lesson

Alekssandra [29.7K]

The answer is decreasing.

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3 years ago

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Which correctly lists three different geologic features that help scientists determine the relative ages of rocks by their posit

elena-s [515]

Answer:

Index fossils, intrustions and cross-cutting relationships.

Explanation:

The correct list of three different geologic features that help scientists determine the relative ages of rocks by their position is "index fossils, intrusions, and cross-cutting relationships".

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2 years ago

What is the width of a time zone?<br>What is the time right now, in your country?

Paha777 [63]

Answer: 15 degrees and it is 2:02 in America

Explanation:

Standard or “Nautical” time zones are 15 degrees of longitude wide. The first central meridian is the Prime Meridian, 0° E/W. The next central meridians are at 15°E and 15° W.

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2 years ago

List 20 names of common weeds and their botanical name.

vodomira [7]

Explanation:

Asparagus Asparagus officinalis

Barley, hare Hordeum leporinum

Barnyardgrass Echinochloa crus-galli

Bermudagrass Cynodon dactylon

Bindweed, field Convolvulus arvensis

Blackberries Rubus spp.

Bluegrass, annual Poa annua

Bromegrasses Bromus spp.

Burclover, California Medicago polymorpha

Canarygrass Phalaris canariensis

Catsear, common Hypochaeris radicata

Chickweed, common Stellaria media

Clovers Trifolium spp.

Cockleburs Xanthium spp.

Crabgrasses Digitaria spp.

Cudweeds Gnaphalium spp.

Dallisgrass Paspalum dilatatum

Dandelion Taraxacum officinale

Dock, curly Rumex crispus

Fiddlenecks Amsinckia spp.

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2 years ago

What would expect to find at point X?

navik [9.2K]

New seafloor is the answer

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2 years ago