Can I get help with these two questions?

Biology

1 answer:

Ahat [919]3 years ago

5 0

HEY DEAR..

1》 All stars die, and eventually — in about 5 billion years — our sun will, too. Once its supply of hydrogen is exhausted, the final, dramatic stages of its life will unfold, as our host star expands to become a red giant and then tears its body to pieces to condense into a white dwarf.

so options B is the correct answer.

2》protostar is the answer...

hope its helpfull

You might be interested in

List ways in which a non-native species might arrive in a<br> new ecosystem.

Alex_Xolod [135]

Answer:

Explanation: Non Native species come in many ways one way is by boat or some other form of transportation where whether its a plant or animal is either brought on purpose legally, brought illegally, or brought by accident. Like maybe a disease someone didn't know they had or a bug or other animal sneaks on undetected

5 0

3 years ago

The big bang theory of the formation and expansion of the universe is supported by the observed ___

jeka94

Answer:

Universe

Explanation:

This should go to physics category

The big bang theory is derived from the observed universe, and the microwave background signal that arrived to earth...

3 0

3 years ago

Examine the words and/or phrases below and determine the relationship

gizmo_the_mogwai [7]

Natural gas

explanation:
solar power, coal, and petroleum are used to power things (i.e. produce electricity)

3 0

3 years ago

What observations are consistent with the conclusion that DNA serves as the genetic material in eukaryotes? Select the four corr

11111nata11111 [884]

Answer:DNA is shown to be the genetic material in bacteria and some phages.

DNA is shown to be present in mitochondria, chloroplasts and nucleus, where genetic function is performed

Specific genes can be isolated and spliced into bacterial DNA, which can be inserted into a bacterial cell, and then its genetic expression is monitored.

DNA and RNA are found to be the only macromolecules in eukaryotes that consist of a set of subunits which can combine in unique sequence

Explanation:

1. Lipds is another macro molecule with different subnits of fatty acids and glycerol,therefore the option ( DNA is found to be the only macro molecule in Eukaryotas that has different sub units) is WRONG.

2 The correlation of action and absorption spectra varies with different organisms DNA. e..g in viral cells there is a wide difference between the absorption and action spectra, that is no correlation, while some bacterial cells showed correlations. The option(For DNA, content in various cell types action and absorption spectra of ultraviolet light are correlated IS WRONG.

4 0

3 years ago

Give 2 examples of how the biosphere supports life

Gwar [14]

Two examples of how the biosphere supports life is by reducing the amount of harmful radiation to reach the surface of the earth. It also gives oxygen for animals to breathe

3 0

3 years ago

Read 2 more answers