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4 years ago

What property did Mendeleev use to position the elements on the periodic table?

Biology

1 answer:

Valentin [98]4 years ago

6 0

He arranged the elements by increasing atomic mass

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if an owl makes one pellet a day how many mice,voles,rats,or birds must it catch in one week ,month,or year

Leona [35]

Answer:

$\large \boxed{\text{32 small animals/wk, 136/mo, and 1640/yr}}$

Explanation:

The pellets from a barn owl often contain the remains of 4 or 5 small animals. Let's assume an average of 4.5 animals per day.

1. Animals per week

$\text{Per week} =\dfrac{\text{1 pellet}}{\text{1 da}} \times \dfrac{\text{4.5 animals}}{\text{1 pellet }} \times \dfrac{\text{7 da}}{\text{1 wk}} = \textbf{32 animals/wk}$

2. Animals per year

$\text{Per year} = \dfrac{\text{32 animals}}{\text{1 year}} \times \dfrac{\text{52 wk}}{\text{1 yr}} =\textbf{1640 animals/yr}$

3. Animals per month

$\text{Per year} = \dfrac{\text{1640 animals}}{\text{1 year}} \times \dfrac{\text{1 yr wk}}{\text{12 mo}} = \textbf{136 animals/mo}\\\\\text{A barn owl eats $\large \boxed{\textbf{36 small animals/wk, 136/mo, and 1640/yr}}$}$

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3 years ago

Which of the following BEST explains how matter and energy cycle through ecosystems

Kamila [148]

Answer:.

Explanation:.

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3 years ago

I want to design an experiment to see if drinking coffee makes students

olga2289 [7]

Answer: students drinking coffee

Explanation:

The dependent variable is the one that DEPENDS on what is about to happen. In this situation, whether the students scored higher DEPENDS on if they drank coffee.

So the independent variable would be the fact that they drank coffee.

Hope this helps!

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Answer: D. Water will move across the cell membrane in both directions because the concentrations of solute particles inside and outside the cell are the same.

Explanation:

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