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bekas [8.4K]
3 years ago
10

About _________ of all species on Earth have become extinct.

Biology
2 answers:
Korolek [52]3 years ago
8 0

Answer:

99%

Explanation:

So, about 99% of all organisms that have ever existed on this planet are extinct today. While that number may sound startling, the reason is that, well, life on Earth has existed for about three and a half billion years, so things are going to change over time. A way to remember how humans have influenced biodiversity laws which can actually lead over time to extinction, the complete removal of the species on the planet, is this mnemonic device, HIPPOC. This stands for habitat alteration, invasive species, pollution, population growth meaning human population growth, overexploitation, and climate change.

Lemur [1.5K]3 years ago
7 0

10,000-100,000 animals are becoming extinct

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Information found on the chromosome of an organism would MOST affect which statement?
ryzh [129]
Letter C, the third option.

Explanation
4 0
3 years ago
The synthesis of protein or carbohydrate polymers always produces which of the following as a byproduct?
murzikaleks [220]

Answer:

Water

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3 0
3 years ago
Animal and Plant Cell Organelles Use the drop-down menus to determine where these organelles can be found. Ribosome Endoplasmic
rjkz [21]

Answer:

  • Animal Cell:

Ribosome, Endoplasmic reticulum, Golgi apparatus, small Vacuoles, Lysosomes, Mitochondria, Cell membrane, Cytoplasm.

  • Plant Cell:

Ribosome, Endoplasmic reticulum, Golgi apparatus, Cell wall, Big Vacuole, Lysosomes, Mitochondria, Cell membrane, Cytoplasm, Chloroplasts.

Explanation:

                       <u>   Animal Cells                              Vegetable Cells</u>

Cell wall                          NO                                             YES

Vacuoles       YES, Small and more than ones     YES, Only one and big

Chloroplast                      NO                                        YES

Plasmatic membrane       YES                                            YES

Mitochondria                       YES                                         YES

Lysosomes                       YES                                           YES

Endoplasmic reticulum      YES                                           YES

Golgi apparatus                   YES                                           YES

Cytoplasm                            YES                                           YES

Ribosome                             YES                                           YES

Both the animal and plant cells are eukaryotic. They carry their genetic material in the nucleus and mitochondria. Organelles are located in the cytosol, and both of them are surrounded by a protector cell membrane.

However, they have some differences:

<u>Cell wall</u>: A rigid structure that provides support and protection.

  • Animal cells do not have a cell wall. They are only surrounded by the cell membrane, which is flexible, so they can adopt different shapes.
  • Plant cells have a wall, so their shape is usually prismatic and regular. The cell wall is composed mainly of cellulose.

<u>Chloroplast:</u> these are organelles that accumulate chlorophyll.

  • Animal cells do not have chloroplasts because they do not photosynthesize.
  • Plant cells have chloroplasts, and they are in charge of the photosynthesis process that allows plants to release oxygen. These organelles use solar light as the source of energy.

<u>Vacuoles</u>:

  • Animal cells have many and small vacuoles whose function is to store water, ions, and waste intracellular substances.
  • Plant cells have a unique big-sized vacuole that might occupy almost 90% of the cell. Their principal function is to store water and keep the turgidity. When the vacuole gets empty, the plant loses rigidity.

Other differences are:

The animal cell has centrioles, while the vegetable cell does not.

Plasmodium, chromoplasts, and glyoxysomes are present in the vegetable cell but not in the animal cell.

3 0
3 years ago
Which group of algae is believed to be the ancestor of land plants?
ycow [4]

Answer:

<u>stonewort, and many green algae such as the Spirogyra.</u>

Explanation:

  • As it was believed that the land algae were believed to be evolved from the stonewort plant and the blue-green algae like the cyanobacteria and the spirogyra that colonized the lands some 500 mn years ago was a freshwater alga.
  • After which the first land plants occur about 470 million years ago, and they were in the form s of moss and liverworts of the vascular in origin.
7 0
3 years ago
Evaporation helps naturally clean water resources for plants and animals. Which two main spheres are involved?
Tpy6a [65]

Answer:

hydroshpere and biosphere

Explanation:

it contains

hydrosphere: cleaning of water

biosphere: helps plants and animals

7 0
3 years ago
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