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allochka39001 [22]
3 years ago
15

The hypothesis, which says lightning struck the Earth causing tiny organic molecules to join and form living organisms, is histo

rically known as.....
A.) primordial soup model

or

B.) evolutionary model
Biology
1 answer:
Leona [35]3 years ago
6 0

The answer is;  A


This model hypothesizes how life started during the early conditions of the earth which were hot and filled with greenhouse gases in its atmosphere about 4 billion years ago. It is explained by the theory of spontaneous generation where organic molecules were created from inorganic molecules spurred from energy from lightning. These organic molecules filled the water bodies and chemically arranged themselves, over time, into primordial life.


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the answer is c elm do to it having a saw blade edged

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2 years ago
A single stranded nucleic acid that plays a role in protein synthesis. there are three different types.
Taya2010 [7]
<span>A single stranded nucleic acid that plays a role in protein synthesis is known as the messenger RNA or mRNA (messenger Ribonucleic Acid). The other two types of nuclei acids are transfer RNA or tRNA and ribosomal rNA or rRNA. These nucleic acids are involved in cellular division in cells, during which transcription and translation occurs.</span>
3 0
3 years ago
1. In which way does the circulatory system rely on the skeletal system? (1 point)
german

Answer:

The correct option is Blood cells are produced in bone marrow.​

Explanation:

Skeletal system can be described as the system which comprises of all the bones and joints of an organism. The main function of the skeleton system is to provide support and protection to the organism.

The circulatory system can be described as a system which comprises of the heart, blood vessels and blood. This system is mainly involved in the transportation of substances like oxygen, nutrients etc in the body.

The skeletal system interacts with many other systems of the body and helps them perform their functions. For example, the skeletal system interacts with the muscular system so that a muscle can contract and relax.

The skeletal system interacts with the circulatory system by producing blood cells in the bone marrow. Red blood cells, as well as white blood cells, are produced by this process.

5 0
3 years ago
una pareja cuya madre es heterocigota para el grupo sanguineo a y su espoco es homocigoto B. Determina ¿que tipo de sangre tendr
pochemuha

Answer:

1/2 IAIB, 1/2 IBIB (es decir, 50% IAIB  y 50% IBIB)

Explanation:

El grupo sanguíneo está determinado por un gen que posee tres diferentes variantes o formas alélicas:

alelo A: IA

alelo B: IB

alelo O: IO

Los alelos IA y IB son codominantes entre sí, es decir, un portador de ambos alelos será de grupo sanguíneo IAIB. Por otra parte, tanto el alelo IA como el alelo IB son dominantes del alelo IO recesivo. En este caso, el cruzamiento entre un individuo heterocigota IAIB con un individuo homocigota IBIB dará como resultado una descendencia 1:1 de heterocigotas IAIB y homocigotas IBIB (es decir, 50% IAIB  y 50% IBIB), ya que la madre producirá ambos tipos de gametos en proporciones equivalentes (1/2 IA  y 1/2 IB), mientras que el padre sólo producirá gametos IB.

3 0
3 years ago
Can someone tell me what's the syllabus taught in American high schools, like in 10th grade? I'm not an American student and I'm
xenn [34]

Before higher education, American students attend elementary and high school for a combined total of 12 years. These years are known as the period from first grade to twelfth grade.

At the approximate age of six, American children begin elementary school, which is exclusively called “elementary school” (elementary school). They attend this school for five or six years and then go on to high school.

High schools are made up of two programs: the first is called "middle school" or "high school" (middle school) and the second is called "high school" (high school). A diploma or certificate is awarded upon graduation from high school. Upon graduation from high school (twelfth grade), American students can go on to college or university. Studies at a college or university are known as "higher education."

4 0
2 years ago
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