The answer is B I'm pretty sure of it.
Answer:
Tt and tt
Explanation:
To solve this just work backwards. The first box has Tt so one parent has to have T and the other t. Since the tall plant is on the top, it is T_ and t_. Next use the second box (tt). They are both t so the final answer is Tt x tt.
The aortic valve prevents backward flow of blood into the left ventricle.
Answer:
What previous paragraph? I don't really understand the question but, a molecule is the smallest part of a substance that has physical and chemical properties of that substance.
¿Qué párrafo anterior? Realmente no entiendo la pregunta, pero una molécula es la parte más pequeña de una sustancia que tiene propiedades físicas y químicas de esa sustancia.
False : Plants, algae and many species of bacteria can make their own sustenance through the process of photosynthesis. They harness sunlight to drive the chemical reactions in their bodies that produce sugars
