Scientific investigations most often start from observations of the natural world and which of the following?

A) model

B) computers

C) variable

D) questions

Which 2 examples may be converted into fossil fuels after being buried under pressure for a long period of time? -used cans -plants -animal waste - electronic waste -chemicals

Which of the following is a valid scientific argument? Group of answer choices Measurements of sea level on the Gulf Coast taken this year are lower than normal; the average monthly measurements were almost 0.1 cm lower than normal in some areas.

Explain what a second messenger molecule's role is in signal transduction, and give an example. Describe how signal information is transduced into cellular responses in the cytoplasm and nucleus.

Which of the following can occur in a polar cell

In a certain plant, yellow leaves are dominant (Y) and red leaves are recessive (y). A plant with genotype Yy and a plant with Yy are crossed. If they have four offspring, how many would you predict would have red leaves? A=4 B=1 C=2 D=3

Compare and contrast Earths geology and geosphere

Explain how soil structure affects the physical properties of soil

The cellular process of breaking down large molecules into smaller ones is defined as

Which of these is one of the only two mammals that lay eggs A chicken B wombat C three-toed sloth D duck-billed platypus

What type of epithelial tissue lines the esophagus and forms the skin epidermis?