physics students use a spring scale to measure the weight of a piece of lead. the experiment was performed two times, one in air and the other in water. if the volume of lead is 50 cm3, what is the difference between two readings on the scale? density of water is equal to 1000 kg/m³

Students will know how much aid they will be getting once they receive an from the college

The different forms of a gene for a given trait are called .

Scientists observed a rock stratum and discovered some fossils. the image shows the fossils they discovered. what can you interpret from the image? an illustration showing layers rock with fossils embedded in some rock layers1. the dinosaur and the mammoth existed after the trilobites.2. the dinosaur and the armored fish existed before the trilobites.3. the trilobites and the armored fish died before the dinosaur.4. the trilobites and the armored fish were born after the dinosaur.5. the early mammoth is older than the trilobites.