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3 years ago

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Tropical rain forests tend to have soils that are nutrient poor, and most of the nutrients are found in the top few inches of th

e soil.
Which adaptation is most likely found in tropical trees?

A. deep root systems
B. shallow root systems
C. needles
D. pine cones

1 answer:

qwelly [4]3 years ago

6 0

I thibk its a bro but yea im not 100 percent sure

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Please help will mark brainliest!!

Vilka [71]

Well If the Salmon die from lack of food from polution or something, and other animals benafit from the nutrience they carry. the rest of the ecosystem might parish, i hope that helped im not sure what was wanted

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3 years ago

Why are old growth forests considered “healthy” ecosystems?

IRISSAK [1]

Firstly, we need to know what a healthy ecosystem is. When an ecosystem is healthy, this would mean that it could supply all the resources that all organisms present in it and with all the resources, there is diversity. Old growth forests are considered healthy because of this reason. These forests remain untouched and had remained in providing the resources needed for the organisms present in it.

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3 years ago

What approximate percentage of lymphocytes is seen at age 4?

mr_godi [17]

Answer:

Blood is composed of several types of cells:

<u>RED BLOOD CELLS</u>: They are the oxygen carriers of the body i.e. they pick up the oxygen as the blood goes through the lungs & release of oxygen to cells.Also known as erthrocytes
<u>WHITE BLOOD CELLS</u>: also known as leukocytes.They are the soldiers of the body.Aims at fighting against the infections ( caused by bacteria & virus)

<u>PLATELETS</u> : helps in the blood clot in response to any wound or injury

There are five types of white blood cells & approx %age they made up in blood are:

•Neutrophils (55% to 70%)

•Band neutrophils (0% to 3%)

•Lymphocytes (20% to 40%)

•Monocytes (2% to 8%)

•Eosinophils (1% to 4%)

•Basophils (0.5% to 1%)

When children are more than 4 year old they have higher % age of lymphocytes than the adults do.

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3 years ago

Spinach and cabbage are _____.

Dmitry_Shevchenko [17]

1 the leaves of plants.

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3 years ago

Read 2 more answers

Total peripheral resistance ________.

Gennadij [26K]

Answer:

C). viscosity increases with increasing length of the blood

Explanation:

Systemic vascular resistance (SVR) refers to the resistance to blood flow offered by all of the systemic vasculature, excluding the pulmonary vasculature. This is sometimes referred as total peripheral resistance (TPR).

Some factors that decrease blood flow and increase resistance include increased viscosity of the blood, increased length of the blood vessel and decreased radius of the blood vessel. Blood vessels - and in particular, the more muscular arteries - are often the source of resistance.

What determines resistance are:

1. Resistance is proportional to LENGTH (L) of the tube (blood vessel)

-Resistance INCREASES as length increases

2. Resistance is proportional to VISCOSITY, or thickness, of the fluid (blood)

-Resistance INCREASES as viscosity increases

3. Resistance is inversely proportional to tube RADIUS to the fourth power

4. Resistance DECREASES as radius increases

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3 years ago