Rain forests cover just 6 percent of the Earth’s land surface, yet they contain _____ percent of Earth’s species. 30 60 70 40

Biology

2 answers:

Inessa [10]3 years ago

6 0

Rain forests cover just 6 percent of the Earth’s land surface, yet they contain 70 percent of Earth’s species.

Ilia_Sergeevich [38]3 years ago

4 0

70 percent of Earth’s species

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What is a reproductive strategy

Bumek [7]

A reproductive strategy presents an approach of a type of an organism to reproduction and of taking care of it's offspring.

Generaly speaking, there are two main reproductive strategies, K and R reproductive strategies.

The organisms that apply the R strategy produce a great number of small, independent offspring and when the offspring is born or hatched it's left to
try to survive on its own. This strategy is used by bacteria, many invertebrates, and reptiles.

On the other hand, the K strategy organisms produce a small number of offspring that they care of for a significant amount of time after they are born. This strategy is used mostly by mammals and birds.

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The effort that led to substantial increases in crop production in the developing world during the mid-1900s is known as the ___

kvasek [131]

Answer:

The effort that led to substantial increases in crop production in the developing world during the mid-1900s is known as the Green Revolution

Explanation:

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The term Green Revolution, a movement that was initiated by agronomist Norman Bourlag, is used today to identify the increase in food production of agricultural origin, starting in 1960.

the strategies that led to the increase in agricultural production and food availability that characterized this revolution were:

Planting and cultivation of products resistant to pests and climatic changes, such as rice, wheat and corn.
The introduction of machinery and instruments to facilitate crops.
The design of efficient irrigation systems.
The use of chemical products to favor agricultural activity, such as fertilizers and pesticides.

The Green Revolution began in the United States, and its success allowed other countries to adopt its techniques.

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Blood has a lower concentration of hydrogen ions than cellular cytoplasm. What does that tell us about the pH?

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Answer:Acids and bases In the human body, both blood and the cytosol (watery goo) inside of cells have pH values close to neutral. ... A base, in contrast, raises pH by providing hydroxide (OH −start superscript, minus, end superscript) or another ion or molecule that scoops up hydrogen ions and removes them from solution.

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Define the first two laws of thermodynamics, and define them using examples for each law.

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FIRST LAW OF THERMODYNAMICS *the total heat energy applied to the system is equal to the sum of the change in internal energy of the system and the work done by the system.


SECOND LAW OF THERMODYNAMICS (entropy) *no process in w/c the total entropy decreases is possible when all the systems taken apart in the process are considered.

BONUUUUSSS :D


 THIRD LAW OF THERMODYNAMICS *The entrophy of a perfect crystal of a substance at the absolute temp. is zero.

I hope this helps! <3

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