A compound that weighs 40. 8 g contains 23. 6 g sb and 17. 2 g f. What is the percent composition of antimony?.

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.

What kind of interaction is depicted in the image? a. intraspecific, direct b. intraspecific, indirect c. interspecific, direct d. interspecific, indirect e. invasion

Which of the following sections on the sat presents the questions in order of difficulty, from easiest to hardest, within each question type? select all that apply. math test writing and language test reading test