The life span of a star depends on:
plz hurry :)

Answers

Answer 1

Answer:

It's size

Explanation:

Answer 2

Answer:

mass

Explanation:

The lifetime of a star depends on its mass. Since stars spend about 90% of their lives burning hydrogen into helium on the main sequence, their main sequence lifetime is also determined by its mass.


Related Questions

what are osmosis..in 50 words ​

Answers

osmosis:

Osmosis is a passive process and happens without any expenditure of energy. It involves the movement of molecules from a region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane.

Any solvent can undergo the process of osmosis including gases and supercritical liquids.

Let us have a detailed look at the different types and effects of osmosis in detail.

Osmosis, the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes). The process, important in biology, was first thoroughly studied in 1877 by a German plant physiologist, Wilhelm Pfeffer. Earlier workers had made less accurate studies of leaky membranes (e.g., animal bladders) and the passage through them in opposite directions of water and escaping substances. 

Which of the following statements about hepatic cells is FALSE?
A. Hepatic cells are the “chemical processing factory”
B. Hepatic cells detoxify drugs and alcohol
C. Hepatic cells are also known as Kupffer cells
D. Hepatic cells release vitamins

Answers

Answer:

the answer to this question is A

Explanation:

hope its helps

have a great day

Answer: C. Hepatic cells are also known as Kupffer cells

Explanation: Got it right on a test

ILL GIVE BRAINLIEST!!!

please answer!

Answers

The answers are: BB Bb bb
BB Bb bb this is the answer leutinunt

What are the two resulting cells formed
from a single cei cared?
A Brother cells
D Parentals

Answers

Answer:

D parentals

not A

Choose THREE human activities that have a negative impact on the
biodiversity within Amazon rainforests.
A
captive breeding of organisms
B
change in the land-use pattern
С
exploitation of available resources
D
Introduction of conservative measures
E
introduction of invasive species
restoration of degraded land

Answers

Answer:

The 3 would be the following:

A

captive breeding of organisms

E

introduction of invasive species

restoration of degraded land

darwin found the bones of the ground sloth and what he thought was an anciet capybara in south america. he asked around, but nobody in south america has ever seen either of thise animals alive. what had happen to them?

Answers

Answer:

They're extinct

Explanation:

Anaerobic respiration produces ___
molecules of ATP.

Answers

Answer:

Anaerobic respiration produces 2

molecules of ATP.

Explanation:

Answer:

anaerobic respiration produce 2

What phase of mitosis are the chromosomes taken from? Why?

Answers

Answer:Metaphase

Explanation:

Which concept is part of the modern evolutionary theory, but not Darwin’s original theory?

Answers

Don’t mind me I just need to answer a question

What is the answer to this?

Answers

Answer:

You mean what's the answer right?

Explanation:

This is a bit to complex by the way

What are the steps of DNA replication

Answers

Answer:Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.

Explanation:

3. Which tool do scientists use to classify plants that is based
on a series of paired characteristics?

observation power

dichotomous key

sketch book

plant classification

Answers

dichotomous key is the answer to your question
Dichotomous key is the answer

1
Which of the following is not a function of the skeletal system?
structural support
temperature regulation
protection
movement

Answers

Answer:

Temperature Regulation

Nuestro planeta esta habitada por numerosas ____, muchas de ellas extendidas en grandes y diversas zonas. Sin embargo, existen especies que habitan una sola ____ con características ____ únicas para su desarrollo.

Answers

Answer:

Nuestro planeta esta habitada por numerosas especies, muchas de ellas extendidas en grandes y diversas zonas. Sin embargo, existen especies que habitan una sola área/región con características ambientales únicas para su desarrollo.

Explanation:  

Entre las miles de especies que habitan el planeta, muchas de ellas pueden estar ampliamente distribuidas, mostrando adaptaciones a una gran variedad de ambientes y hábitats, mientras que muchas otras solo se encuentran restringidas a determinadas areas o regiones particulares que presentan condiciones ambientales determinadas. Esta diferencia en distribución esta muy relacionada a la historia de la especie,  a la edad de la misma sobre la tierra, adaptaciones a los ambientes y capacidades reproductivas y de dispersión.

Dentro de la clasificación de especies de acuerdo a su distribución, podemos mencionar a las especies

nativas: aquellas que habitan y se distribuyen las áreas naturales donde se originaron,endemicas: entran dentro del concepto de nativas, pero a parte se caracterizan por habitar unicamente una región en particular debido a las condiciones ambientales que les son propicias para su desarrollo. Estas especies no pueden trasladarse a otras regiones.exoticas: aquellas especies que salen de su area natural de distribución para habitar otras areas mas lejanas. Allí pueden establecerse e interactuar con especies nativas sin causar grandes daños.invasoras: especies exoticas que llegan a otras areas, que se establecen y que tienen la capacidad de reproducirse a una tasa superior a la de las especies nativas, invadiendolas y desplazandolas. Interactuan con las especies nativas y causan daños importantes.

Los términos nativos, endemicos, exóticos son relativos al área a la que se esté haciendo alusión: un continente, un país, una región o un bioma.

1. What common characteristics do you notice in all the marine ecosystems? What are some major differences?

Answers

Answer:

Marine ecosystems are characterized by factors such as availability of light, food and nutrients. Other factors that affect marine ecosystems include water temperature, depth and salinity, as well as local topography. Changes in these conditions can change the composition of species that make up the marine community.

Which of the following is most likely a DNA nucleotide?

O deoxyribose, guanine, phosphate

O a base, a sugar, and a phosphate

O ribose, phosphate, and adenine

O deoxyribose, uracil, and phosphate

Answers

Answer:

deoxyribose, uracil, and phosphate

Explanation:

A __ fault generally occurs at a transform boundary

Answers

Answer:

A strike-slip fault generally occurs at a transform boundary

I believe the answer is Strike-slip fault.

In which stage of the cell cycle is the cell preparing for division? *
G1
S phase
G2 phase

Answers

Answer: Image result for In which stage of the cell cycle is the cell preparing for division? *

Cell cycle has different stages called G1, S, G2, and M. G1 is the stage where the cell is preparing to divide. To do this, it then moves into the S phase where the cell copies all the DNA.

Explanation:

clouds form by the condensation of...

A: Water vapor
B: dust or dirt
C: heat
D: rain

Answers

Answer:

a

Explanation:

clouds form when water rises as water vapor and cools and condenses into clouds

plssss help Which phrase describes conduction?


transfer of heat by the actual movement of warmed matter


the process in which energy is emitted by one object, transmitted through space, and absorbed by another


the process in which energy is released by molecules breaking apart


transfer of heat between two objects that are touching

Answers

Answer:

the process in which energy is emitted by one object, transmitted through space, and absorbed by another is correct.

Explanation:

The transfer of energy is not by movement.

Answer:

A: transfer of heat by the actual movement of warmed matter

Explanation:

I took the test and got all of the questions right.

Have a good day! :)

What is the complementary sequence of TACGTATGAAAC?

Answers

Answer:

ATGCATACTTTG

Explanation:

The letters are alternate of each other.

T-A

A-T

G-C

C-G

ATGCATACTTTG is the compementary sequence

A humpback whale is classified as a mammal while a basking shark is a fish. Which taxonomy classification are the same for a humpback whale and a basking shark

Answers

Answer:

A. Domain, kingdom, phylum only

Explanation:

The domain is Bacteria, Archaea, and Eukarya which every living thing falls under, the kingdom is every animal (now that's excluding plants and bacteria), and the phylum is a primary category in biological taxonomy especially of animals that ranks above the class and below the kingdom.  

The taxonomic classification that is the same for a humpback whale and a basking shark is Phylum.

A chordate refers to an animal (Kingdom Animalia) of the phylum Chordata.

This phylum includes all vertebrates as well as two other subphyla tunicates and cephalochordates.

Chordates are characterized to have a notochord,  pharyngeal slits (embryo development), nerve cord, and a tail.

In conclusion, the taxonomic classification that is the same for a humpback whale and a basking shark is Phylum.

Learn more in:

https://brainly.com/question/1674644

How are cancer cells different from noncancerous cells?
A. Cancer cells do not contain DNA; therefore, the body cannot regulate their growth and division.
B. Cancer cells do not respond to the normal signals that shut down the cell division process.
C. Cancer cells are neither recognized nor destroyed by the body's immune system.
D.Cancer cells grow to extremely large sizes, forming tumors that block the flow of blood.

Answers

Answer:

B

Explanation:

Cancerous cells grow out of control because they do not receive the signals to stop grow. This causes tumors to form, and continue growing until treated.

Urea diffused in all regions of the filter during countercurrent flow. Using what you know about the sizes of urea and potassium, which graph shows what would happen to potassium during countercurrent flow?

Answers

Answer:Diffuse in all regions of the filter

Explanation:The potassium level in dialysis is often lower than usual because of incomplete equilibration

During a fierce storm a large number of tall trees on a island are uprooted by the wind and die most of the trees on the islands are now short trees and produce seeds that grow into short trees what concept is shown in this example

Answers

Answer:

Natural Selection

Explanation:

In all the three options namely Artificial Selection , Genetic Engineering  and Gene Splicing  there is involvement of human beings in gene modification. While in the case of natural selection genetic modification occurs through the evolutionary process through several hierarchical orders.

The prime factorization of blank is 24 × 5.

Answers

Answer:

80

Explanation:

Answer:

120 hope this helps :)

Explanation:

An earthquake occurs in which 'sphere?

Answers

Answer:it effects the biosphere and the hydroshere

Explanation: i learned this pls mark brainlist

Answer:

lithosphere

Explanation:

earthquakes are caused by shifts in the outer layers

hope that helps

Have a good day

Which type of mutation can be passed to future generations?
Enzyme mutations
Somatic mutations
Neutral mutations
Gamete mutations

Answers

Answer:

gamete mutations can be type of mutations

Can anyone give me two mineral feed ingredients for poultry birds ?! 20 points for it

Answers

Answer: aragonite oyster shell crab meal

Explanation: aragonite is for calcium and oyster shell also has calcium. Crab meal provides small amounts of protein and minerals

what did all living thinhs on earth originally evolved from?​

Answers

every living thing on earth evolved from a single cell organism

Answer:

If correct u welcome if wrong sorry ;)

When cyanobacteria evolved at least 2.4 billion years ago, they set the stage for a remarkable transformation. They became Earth's first photo-synthesizers, making food using water and the Sun's energy, and releasing oxygen as a result.

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