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3 years ago

6

To protect biodiversity worldwide, many conservationists suggest that at least 10 percent of Earth's land be set aside as protec

ted preserves. This percent age is the minimum and should be considered in all cases.

1 answer:

Slav-nsk [51]3 years ago

5 0

Wait what I don’t understand

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What is the first thing that happens in photosynthesis?

Lerok [7]

<span>light energy is captured</span>

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3 years ago

Which phrase best defines rocks? A. objects made of crystals, minerals, water, and air B. objects made of crystals and water C.

galina1969 [7]

A. objects made of crystals minerals water and air

Process of elimination-
there isn’t organic matter in rocks so D is out
they are made of minerals so B is out
some types of rock (pumice) have air bubbles in them so A is more likely than C

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3 years ago

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What is a cells DNA like the books in a library

tino4ka555 [31]

Think of it this way:

DNA inside cells store all the genetic information on a person's looks, eye colour, hair colour etc. It makes them unique. The analogy of being like books in a library basically suggests that in a library there is so much information and every book is different with different knowledge... That's basically what DNA is; millions of different information things.

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3 years ago

You are enjoying your vacation on the coast and decided to go snorkeling. Your tidal volume is 460 mL and breathing rate is 14 b

m_a_m_a [10]

Answer:

Option C

Explanation:

Option

A. 6440 mL/min

B. 4340 mL

C. 3500 mL/min

D. 2940 mL/min

Solution

It is required to find the minute ventilation which is equal to the product of rate of breathing and the total amount of gas being inhaled or exhaled per breathe. Let this minute ventilation be denoted by " $V_f$ "

Thus,

$V_f = TD * B_r$

where TD is the tidal volume and Br is the rate of breathing

Substituting the given values we get

$V_f = 460 *14 \\V_f = 6440$

We will now reduce the air held in the conducting zone of respiratory system

Air held per breathe $= 210$

Total Air held

$= 210 * 14 \\= 2940$

Amount of fresh air one can breathe in and out every minute

$= 6440 - 2940 \\= 3500$

Hence, Option C is correct

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3 years ago

1. Describe the main pathways of the water cycle, including

alukav5142 [94]

Answer:

Enjoy your free answer

Explanation:

Liquid water evaporates or the process of transpiration, forming water vapour that moves through the atmosphere, then comes down as precipitation, either enters the soil or transfers onto the lakes, rivers, oceans, etc.

Enjoy!

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3 years ago