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deff fn [24]
3 years ago
8

What are two characteristics of Technetium and two characteristics of Tungsten?

Biology
1 answer:
Mariulka [41]3 years ago
3 0

Two characteristics of Technetium:

1) Technetium is a rare, silver-gray metal that tarnishes slowly in moist air.

2)In powder form, it burns in oxygen to form the heptoxide (Tc2O7)

Two characteristics of Tungsten:

1)Tungsten is a very hard, dense, silvery-white.

2) Tungsten is  lustrous metal that tarnishes in air, forming a protective oxide coating.

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2 years ago
De acuerdo al siguiente enunciado, responda: "sus funciones son similares; difieren en su origen embrionario y en su plan de con
salantis [7]

Answer:

el enunciado hace referencia a estructuras análogas

Explanation:

La estructuras análogas (por ejemplo, órganos, tejidos, etc) son aquellas que cumplen la misma o similares funciones pero que poseen un origen evolutivo distinto (es decir, no comparten un antepasado común) y son producto de la convergencia evolutiva. Por el contrario, estructuras homólogas son aquellas que se caracterizan por tener un origen evolutivo común (comparten un antepasado común), independientemente de la función que cumplan. Las estructuras análogas se caracterizan por tener diferentes orígenes embrionarios y planes de construcción distintos (es decir, las células que dan origen a este tipo de estructuras son de linajes diferentes). Un ejemplo bien conocido de estructuras análogas son las alas de mariposas y murciélagos, las cuales cumplen la misma función pero no derivan de un antepasado común.

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3 years ago
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Explanation:Ocean acidification is the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide (CO. 2) from the atmosphere. Seawater is slightly basic (meaning pH > 7), and ocean acidification involves a shift towards pH-neutral conditions rather than a transition to acidic conditions (pH < 7).

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What's Chlorophyll ?​
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Explanation:

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