The fossil record shows part of the history of life on Earth and can tell scientists about environmental changes over time. Which of the following
statements explains what fossils of palm fronds found in Antarctica tell us
about what the climate was once like? *
Palm fronds indicate an aquatic environment was once present
Palm fronds indicate a period of drought once existed
Palm fronds indicate a tropical climate was once present
Palm fronds indicate Antarctica has always had a polar climate
6?$77?4 Yeah cv

integrated circuit (ic) is defined as a set of electronic circuits on one small flat piece of semiconductor material, normally silicon. a functional electronic circuit requires transistors, resistors, capacitors, inductors, etc., and the connections between them.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

the correct answer is b