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explain how oxygen moves across from the lungs into the blood? how are the lungs adapted for this?

via diffusion down a concentration gradient as O2 levels are higher in the lungs than in the blood. for faster diffusion you need:a large surface area (lungs have million of alveoli which are air filled s...

Answered by Maaedah K. • Biology tutor

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Describe the key features of the Marshall Plan

One key feature of the Marshall plan was that it was an economic policy that implemented the March 1947 Truman doctrine. It distributed $17bn worth of aid between 1948 and 1952 through the ...

Answered by Matthias B. • History tutor

6572 Views

Daniel bakes 420 cakes. He bakes only vanilla cakes, banana cakes, lemon cakes and chocolate cakes. 72 of the cakes are vanilla cakes. 35% of the cakes are banana cakes. The ratio of the number of lemon cakes to the number of chocolate cakes is 4:5 Work

2/7 of 420 = 120 vanilla cakes35% of 420 = 147 banana cakes420 - 120 - 147 = 153 chocolate and vanilla cakes4+5 = 9153/9 = 1717*4 = 68

Answered by Anna F. • Maths tutor

17743 Views

What are the 2 types of hypotheses in Research?

The first is the null hypothesis (H₀), which predicts that there will be no difference between the two variables being measured. For example, if we are measuring student performance in two diff...

Answered by Filiz S. • Psychology tutor

3247 Views

When and why should I use the subjunctive in Spanish?

Firstly remember that the subjunctive is not a tense but a mood and is used for expressions of doubt and improbability. Here is an acronym to remember when to use the subjunctive (WEIRDO): Wishes, Emotion...

Answered by Anastasia Z. • Spanish tutor

1685 Views