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Firdavs [7]
4 years ago
10

When does heart tissue first form in a human? A. During the first trimester of pregnancy B. During birth C. During the third tri

mester of pregnancy D. During the second trimester of pregnancy
Biology
1 answer:
Lelu [443]4 years ago
3 0

During the first trimester of pregnancy.

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The diagram below shows four planets and their distances from the sun.
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B is the correct answer. I got it right.

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How do pseudopods work?
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How do you use the periodic table to determine certain qualities of atoms?
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Answer:

Determining Chemical Properties using the Periodic Table. Chemical properties of each element are determined by the element's electronic configuration, and particularly by its outermost valence electrons.

4 0
4 years ago
Soaps can be produced by using bases to dissolve fats or oils. Ammonia feels slippery or soapy to the touch because ________. Gr
Marta_Voda [28]

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Ammonia feels slippery or soapy to the touch because<u> it is an [alkaline] base and can dissolve some of the fats and oils in your skin.</u>

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Ammonia is an alkaline solution that, when combined with water, it actually makes soap. This base feels slippery to the touch because when it makes contact with all the oils that are naturally present in your skin, it produces soap, making it slippery and soapy.

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3 years ago
The type of heat transfer where heat is transferred from one solid to another is called:
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conduction is solid 
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