What is biodiversity

Answer:

the variety of life in the world or in a particular habitat or ecosystem

Answer:

Biodiversity is the biological variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level.

Explanation:

Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity. Biodiversity is not distributed evenly on Earth, and is richer in the tropics. These tropical forest ecosystems cover less than ten percent of earth's surface, and contain about ninety percent of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural processes that sustain life.

Rapid environmental changes typically cause mass extinctions. More than 99.9 percent of all species that ever lived on Earth, amounting to over five billion species, are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described. The total amount of related DNA base pairs on Earth is estimated at 5.0 x 1037 and weighs 50 billion tonnes. In comparison, the total mass of the biosphere has been estimated to be as much as four trillion tons of carbon. In July 2016, scientists reported identifying a set of 355 genes from the Last Universal Common Ancestor (LUCA) of all organisms living on Earth.

The age of the Earth is about 4.54 billion years. The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago,during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. There are microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia. Other early physical evidence of a biogenic substance is graphite in 3.7 billion-year-old meta-sedimentary rocks discovered in Western Greenland. More recently, in 2015, "remains of biotic life" were found in 4.1 billion-year-old rocks in Western Australia. According to one of the researchers, "If life arose relatively quickly on Earth .. then it could be common in the universe."

Since life began on Earth, five major mass extinctions and several minor events have led to large and sudden drops in biodiversity. The Phanerozoic eon (the last 540 million years) marked a rapid growth in biodiversity via the Cambrian explosion—a period during which the majority of multicellular phyla first appeared.[34] The next 400 million years included repeated, massive biodiversity losses classified as mass extinction events. In the Carboniferous, rainforest collapse led to a great loss of plant and animal life. The Permian–Triassic extinction event, 251 million years ago, was the worst; vertebrate recovery took 30 million years. The most recent, the Cretaceous–Paleogene extinction event, occurred 65 million years ago and has often attracted more attention than others because it resulted in the extinction of the non-avian dinosaurs.

The period since the emergence of humans has displayed an ongoing biodiversity reduction and an accompanying loss of genetic diversity. Named the Holocene extinction, the reduction is caused primarily by human impacts, particularly habitat destruction. Conversely, biodiversity positively impacts human health in a number of ways, although a few negative effects are studied.

The United Nations designated 2011–2020 as the United Nations Decade on Biodiversity. and 2021–2030 as the United Nations Decade on Ecosystem Restoration, According to a 2019 Global Assessment Report on Biodiversity and Ecosystem Services by IPBES 25% of plant and animal species are threatened with extinction as the result of human activity. An October 2020 IPBES report found the same human actions which drive biodiversity loss have also resulted in an increase in pandemics.

In 2020, the fifth edition of the UN's Global Biodiversity Outlook report, which served as a “final report card” for the Aichi Biodiversity Targets, a series of 20 objectives set out in 2010, at the beginning of the UN's Decade on Biodiversity, most of which were supposed to be reached by the end of the year 2020, stated that none of the targets – which concern the safeguarding of ecosystems, and the promotion of sustainability – have been fully met.

highlight any five differences between living and non living things​

What does HEPA stand for in HEPA filter?

O a. High-Energy Particulate Arrestance

O b. High-Energy Particulate Air

O c. High-Efficiency Particulate Air

d. High-Efficiency Passing of Air

While organizing his computer's power cords, Matt realizes his printer power cord is frayed (coming apart). What should Matt do to prevent damage and still be able to use the printer?

Move the power cord to another outlet.
Keep the cord plugged in.
Replace the power cord.
Unplug the power cord.

deklarasyon ng kasarinlan ng Pilipinas 5 example​

Please Help ASAP I will give brainiest please.

Describe the movement of the tectonic plates in model D. What is this situation called?

6)
The cellular process in which materials are moved across a membrane from an area of low concentration to an area of high
concentration is called?

How are bacteria, a tree, and an cat alike?
A. They are all made of prokaryotic cells.
B. They are all organisms made of cells.
C. They are all made of eukaryotic cells.
D.They all reproduce in the same way.

Active and passive transport are important processes that help the cell

Which phrase is most similar in meaning to scientific theory

a) What is the link between the age and the weight of the animal ?​

what would most likely happen to a person who is not getting enough essential amino acids in his or her diet?
A. The body would synthesize the amino acids.
B. Muscle growth and repair would be limited.
C. Stored protein would break down
D. The formation of proteins would increase.

how the Integumentary System interacts with nature

I don’t Know, how people can fake whole relationship. I can’t even fake a hello to somebody. I don’t like...!!!​

Select the option below that is true concerning the path of light when looking through a compound microscope

O a. light source; condenser: specimen; objective lens; ocular lens

O b. condenser; light source; specimen; ocular lens; objective lens

O c. condenser; light source; specimen; objective lens; ocular lens

O d. light source; condenser; objective lens; specimen; ocular lens

O e. light source: specimen; condenser; objective lens: ocular lens

1) What three things do geologis look at when studying a rock
Sample

When investigating competition between two organisms what is important that they both have/require

how the zygote with genotype YO is produced
​

which of the following describes aristolles model of the solar system select three answers

LS2-1 A student has two flasks of growing algae. To one flask they add some phosphorus, while leaving the other flask
alone. The student monitors population numbers of the algae daily for ten days. Based on the graph of the results,
what conclusion can be made about the algae population and phosphorus?
A) The phosphorous did not change the carrying capacity of the environment. B) The carrying capacity of the environment was fixed. C) The phosphorous decreased the carrying capacity of the environment. D) The phosphorous increased the carrying capacity of the environment.

It is summer and your friend Michelle, who lives in Michigan, tells you that she is a morning person and functions best when the sun wakes her up early in the morning. She is looking to take a vacation to a location where the sun rises earlier in the day. Where (with respect to Michigan) should she be looking? Explain why she should look in this area, by explaining how the tilt of the Earth’s axis affects the seasons. Finally, suggest two specific locations that would meet Michelle’s needs.

Which of the following is a complementary base pair for DNA?
Adenine and thymine
Guanine and adenine
Guanine and uracil
Cytosine and thymine

produced more rapidly/abundantly in an infection - produced more abundantly during allergic reactions - responsible for blood clotting - carries oxygen - the more efficient phagocyte - contains heparin - cell membrane has AB antigens - help recognize foreign antigens - contains histamine - produce antibodies to foreign antigens A. erythrocyte B. lymphocyte C. eosinophil D. neutrophil E. basophil F. platelet G. monocyte

You are riding your bike and you slam on your brakes. What is the most likely acceleration that your bike undergoes

Deforestation, the chopping down of large numbers trees for human use, is considered to have a negative impact on climate change. Why do you think this is the case?

Which of the following is a reactant during cellular respiration?
Carbon dioxide
O Glucose
O Energy
O Water

PLZZZZZZZZ HELP WILL GIVE BRAINLIEST


A scientist is researching the biochemical reactions that take place during digestion in frogs. The scientists is simulating frog digestion in a lab setting and adds the enzyme, lipase, to the substance to be broken down.

How will the enzyme speed up this chemical reaction?


A.The enzyme will lower the activation energy of the chemical reaction.

B.The enzyme will be reproduced as a result of a chemical reaction.

C.The enzyme will increase the activation energy of the chemical reaction.

D.The enzyme will add heat to the chemical reaction.

Al desplazar el carro de la platina el preparado biológico se mueve

To assign ages to sea-floor rocks, scientists used?
a. a mid-ocean ridge chart.
b. the geomagnetic reversal time scale.
c. a tectonic plate map.
d. a supercontinent map.

What are the three ways something can accelerate