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aniked [119]
2 years ago
9

A biologist counts 1,000 in a 200 acre area of grasslands. what is the population density

Biology
1 answer:
zimovet [89]2 years ago
5 0
200,000 is the population density.
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Explanation:

Yeasts and filamentous fungi are extensively used as model organisms for eukaryotic genetic research, including cell cycle regulation, chromatin structure, genetic recombination and gene regulation.

5 0
3 years ago
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What is the role of volcanoes in the Earth's system?
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Answer: Volcanic materials ultimately break down and weather to form some of the most fertile soils on Earth, cultivation of which has produced abundant food and fostered civilizations. The internal heat associated with young volcanic systems has been harnessed to produce geothermal energy

Explanation:

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3 years ago
Planet x is 45 AUs from the sun. what is its period
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Solar System[a] is the gravitationallybound system of the Sun and the objects that orbit it, either directly or indirectly,[b] including the eight planets and five dwarf planets as defined by the International Astronomical Union (IAU). Of the objects that orbit the Sun directly, the largest eight are the planets,[c]with the remainder being smaller objects, such as dwarf planets and small Solar System bodies. Of the objects that orbit the Sun indirectly—the moons—two are larger than the smallest planet, Mercury.[d]

Solar System

The Sun and planets of the Solar System
(distances not to scale)

Age4.568 billion yearsLocation

Local Interstellar Cloud, Local Bubble,

Orion–Cygnus Arm, Milky Way

System mass1.0014 Solar massesNearest star

Proxima Centauri  (4.25ly)

Alpha Centauri (4.37 ly)

Nearest knownplanetary systemProxima Centaurisystem  (4.25 ly)Semi-major axis of outer known planet (Neptune)30.10 AU  (4.503 billion km)Distance to Kuiper cliff50 AU

Populations

Stars1  (Sun)Known planets

8 (Mercury

Venus

Earth

Mars


Jupiter

Saturn

Uranus

Neptune)

Known dwarf planets

Possibly several hundred;[1]
five currently recognized by the IAU

(Ceres

Pluto

Haumea

Makemake

Eris)

Known natural satellites

525

(185 planetary[2]

347 minor planetary[3])

Known minor planets778,897  (as of 2018-06-21)[4]Known comets4,017  (as of 2018-06-21)[4]Identified rounded satellites19Invariable-to-galactic plane inclination60.19°  (ecliptic)Distance to Galactic Center27,000 ± 1,000 lyOrbital speed220 km/sOrbital period225–250 MyrSpectral typeG2VFrost line≈5 AU[5]Distance to heliopause≈120 AUHill sphere radius≈1–3 ly

The Solar System formed 4.6 billion years agofrom the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system's mass is in the Sun, with the majority of the remaining mass contained in Jupiter. The four smaller inner planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal. The four outer planets are giant planets, being substantially more massive than the terrestrials. The two largest, Jupiterand Saturn, are gas giants, being composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are ice giants, being composed mostly of substances with relatively high melting points compared with hydrogen and helium, called volatiles, such as water, ammonia and methane. All eight planets have almost circular orbits that lie within a nearly flat disc called the ecliptic.

8 0
3 years ago
Assume that the mother's genotype is AZ/az, and the father's genotype is Az/aZ, and the recombination rate is 10%. What are the
attashe74 [19]

Answer:

0.45 from mom and 0.05 from dad.

Explanation:

The recombinant progeny might occur due to the crossing over at the time of meiosis in which the exchange of chromosomes occur in the homologous chromosomes of non sister chromatids.

The progeny receives half of their chromosome from the mother and half from the father. The mother 50% AZ and 50% az chromosomes respectively. The 10% recombination has occured due to which the mother chromosomes is reduce upto 45%. The recombinant  10% will be aZ and Az and has 5% frequency. Mom has the ability of az chromosomes is 0.45 %. The father has the genotype 50% Az and 50% aZ. The 10% recombination has occured due to which the father chromosomes is reduce upto 45%. The recombinant will be az and AZ with 5% frequency. So, father has az with 0.05 % probability.

Thus, the answer is 0.45 from mom and 0.05 from dad.

8 0
3 years ago
What is the primary source of stem thickening in plants?
Ipatiy [6.2K]
The primary source of stem thickening in plants is the vascular cambium. It is a plant tissue located between the phloem and the xylem and in the root of a vascular plant. It is the source of secondary growth or the radial growth of the stem of a plant.
7 0
3 years ago
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