Why were beavers valuable during the westward expansion?

The graph of a twice differential function is shown at right. Which of the following is true? Helppp Meee Plsss.... Complete with the correct form of the verb preterite tense.11. Yo _______________ la comida. (preparar)12. Nosotros _______________ en casa. (cenar)13. Mi amigo _______________ a casa. (regresar)14. Ellos _______________ un DVD. (mirar)please helpI will give brainllest and 5 stars for the best answer Pls help me its due hellop PLS HELPPPPPPPPPPPPPPPPPPPPPPPPP Which term best describes a diet designed to help control a medical condition? Find the area of the shape shown below. Mia has been learning about the ways scientists study rocks and how they determine their relative ages.Write the letters of the correct answers on the lines at left.______ 3. Mia knows that scientists use several methods to help determine the relative ages of different rock layers, including using fossils. Which of the following are other ways to determine the relative ages of rock layers? Choose the three that apply.A. faultsB. law of superpositionC. radiometric datingD. rock half-lifeE. igneous intrusion Is quadrilateral ABCD a parallelogram? Explain. An orange juice container starts with 6 7/8 cups of juice. How much orange juice is left after three 1 1/4 cup serving are poured? I tried but kept getting it wrong ;-;Find the area of the composite figure. Paul's letter to a church he had not yet visited is: Anybody know ? Need help Energy questions if you dk dont awnser----------------Energy transfer occurs when a warmer object is in contact with a cooler one.----------------Energy transfer when a electrical source is connected in a complete circuit to an electrical device.----------------Energy transfer can be transferred through matter or empty space via -You can only choose the awnsers on the picture A wave has a frequency of 1000 Hz. If the wavelength is 0.5 m, how fast is the wavetraveling? which of the following can be written as the sum of 2 prime numbersa)11b)15c)17d)23e)29 Tu as __________ le livre dans ton sac dos.mettumettmettimis Test questions are too easy if the wrong answers are not ___blank. Which word best completes the sentence? A)invigorated B)prudentC)ethical D)plausible 2.. Existira vida sin carbono? Podra ser reemplazado por otro elemento como, por ejemplo, elsilicio? Por qu? pls help I new this fast