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3 years ago

What are the characteristics of supernovae?

2 answers:

5 0

Ans: As the star runs out of nuclear fuel, some of its mass flows into its core. Eventually, the core is so heavy that it cannot withstand its own gravitational force. The core collapses, which results in the giant explosion of a supernova. The sun is a single star, but it does not have enough mass to become a supernova.

Veseljchak [2.6K]3 years ago

4 0

As the star runs out of nuclear fuel, some of its mass flows into its core. Eventually, the core is so heavy that it cannot withstand its own gravitational force. The core collapses, which results in the giant explosion of a supernova. The sun is a single star, but it does not have enough mass to become a supernova.

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In which of the following settings would sound waves travel the fastest through the air?

iVinArrow [24]

B. a desert in southern Texas. In heat sound waves travel faster because the heat gives them more energy which allows them to vibrate faster.

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3 years ago

A man is walking home alone late one night and is startled when a dog in a yard to his left barks unexpectedly. Respond to

larisa86 [58]

I think that the best answer is first one:
a) Trace the path that the sound waves travel as they enter the ear and proceed to the receptor cells for hearing, making sure to explain the process of transduction.

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2 years ago

What are the seed leaves that provide energy for young seedlings of angiosperms called?

GaryK [48]

They are called cotyledons

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3 years ago

BRAINLIESTTTT ASAP!!

LiRa [457]

Photosynthesis processes used plants and other autotrophs to capture light energy and use it to power chemical reactions and convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches.

The similarities and differences between photosynthesis and cellular respiration:

The Similarities;

Both involve in production of energy
Both involve the exchange of gases

The Differences:

Photosynthesis takes put in chloroplast, where as cellular respiration takes put in mitochondria.
Photosynthesis happen as it were during presence of daylight where as cellular respiration happens all the time.

Glad to help ya!! Please correct any mistakes in my answer!! :)

4 0

2 years ago

PLS HELP ASAP 50 POINTS AND BRAINLIEST USER

Kryger [21]

Plasma membrane - protect cell from it's surroundings. In both kinds of cells.

Cytoplasm - supports rounded cell structure, within it are all the organelles. Contains chemicals needed by the cell. In both kinds of cells.

Nucleus - contains DNA and is the control center of the cell. In both kinds of cells.

Nuclear envelope - surrounds nucleus, makes sure important molecules (DNA) stay within the nucleus. In both cells.

Nucleolus - makes ribosomes. In both cells.

DNA - genetic information for development and function. In both cells.

Rough ER - produces proteins. In both cells.

Smooth ER - makes and stores lipids (fats). In both cells.

Golgi body - sort and process macromolecules (proteins, lipids, etc). In both cells.

Ribosomes - makes proteins. In both cells.

Vacuoles - very large in plants, a storage center. In both cells.

Lysosome - digests and removes wastes. In both cells.

Mitochondria - energy powerhouse, produce ATP energy. In both cells.

Cytoskeleton - shapes, supports, and facilitates movement. In both cells.

Centrioles - cell division (form spindle fibers). Only in animal cells.

Cilia - movement for microorganisms. Only in animal cells.

Chloroplasts - photosynthesis, helps absorb sunlight and make food for the plant. Only in plant cells.

Cell wall - strength, structure, filters molecules going in and out of the cell. Only in plant cells.

Central Vacuole - holds materials and wastes, helps maintain proper pressure within the cell. Only in plant cells.

Hope this helps!

3 0

3 years ago