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3 years ago

True or false are sun is now the main sequence of its life cycle

Biology

1 answer:

irina [24]3 years ago

5 0

Answer:

Image result for True or false are sun is now the main sequence of its life cycle

The Main Sequence:

The Sun, like most stars in the Universe, is on the main sequence stage of its life, during which nuclear fusion reactions in its core fuse hydrogen into helium. ... For the Sun, this process began 4.57 billion years ago, and it has been generating energy this way every since.

Explanation:

- Eijiro <3

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How can a punnett square predict the traits of offsprings

Anna35 [415]

A punnet square predict the traits of offspring genetic crosses and test crosses.

Explanation:

In pea plants, the traits or characteristics inheritance is been observed and studies by Gregor Mendel. A model was proposed by him, in which the characteristics or traits are specified from genes. Genes can take different alleles or versions. The appearance of an organism can be determined by the dominant alleles. These hides the characteristics of recessive alleles.

The law of segregation is, When gametes are made by an organism the copy of one gene is passed to each gametes. The combinations of allele which is genotype, and the phenotypes which are the characteristics that are observable can be predicted by a Punnett square. This is done by genetic crosses. In order to predict whether the organism is heterozygous or homozygous can be determined by a test crosses.

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3 years ago

IF most of the energy we use on earth comes from the sun –how does that energy (light and thermal) end up

____ [38]

Answer:

1: Chemical Energy

2: Kinetic Energy

3: Electrical Energy

4: Mechanical Energy

Explanation:

1: The energy held in food is called chemical energy. It is a form of potential energy held within chemical bonds between atoms.

2: When flowing water is captured and turned into electricity, it is called hydroelectric power or hydropower. There are several types of hydroelectric facilities; they are all powered by the kinetic energy of flowing water as it moves downstream.

3: The power for lights and stuff is Electrical Energy, ofc :]

4: The chemical energy in the food gets changed into the mechanical energy of moving muscles.

Hope this helps!! :D

5 0

3 years ago

Are rocks hard i dont know if rocks are hard

Ray Of Light [21]

It is extremely useful for geologists, because most specimens of a given mineral are very close to the same hardness. ... So, we can conclude that not all the rocks are hard, and the hardness of rocks depends on how the atoms of the rock's minerals are bound to each other and how they are arranged.

8 0

3 years ago

Which statement best describes how a B-cell works?

iragen [17]

Answer:It produces antigens which stimulate a fever.

Explanation:

4 0

3 years ago

Read 2 more answers

Why are animal cells not capable of carrying out photosynthesis

melisa1 [442]

Animal cells do not contain chloroplasts
our mitochondria only gathers energy from the food we eat not the warmth we absorb from the sun.

8 0

4 years ago