1. In the menstrual cycle, which hormone causes the wall ofthe follicle to develop after ovulation to secrete progesterone?a. Luteinizing Hormone c. Follicle Stimulating Hormoneb. Progesteroned. Estrogen2. Which of the following is a role of Luteinizing hormonea. Stimulates ovulation.b. Stimulates follicle development.3
Adjacent angles are two angles that have a common vertex and a common side but do not overlap. In the figure, ∠1 and ∠2 are adjacent angles. They share the same vertex and the same common side. In the figure, ∠1 and ∠3 are non-adjacent angles.
Gravity is very important to us. We could not live on Earth without it. The sun's gravity keeps Earth in orbit around it, keeping us at a comfortable distance to enjoy the sun's light and warmth. It holds down our atmosphere and the air we need to breathe.
1. Gravity is very important to our everyday lives. Without Earth’s gravity we would fly right off it. It is the Sun’s gravity that keeps Earth in orbit around the Sun. Life on Earth needs the Sun’s light and warmth to survive.2. Gravity keeps everything on Earth from floating away.3. Gravity is the force that pulls objects to Earth.4. Without gravity, we would have no atmosphere. This means that there would be no air to breathe.5. Lastly, gravity helps the Earth to stay just the right distance from the Sun, so it’s not too hot or too cold.
14. About how long ago was Earth formedA. 4.5 million yearsC. 45 million yearsB. 4.5 billion yearsD. None of the above15. Oceanic crust isanddense than continental crust.A. wider, lessB. thinner, moreC. thinner, lessD. wider, more16. Wind, solar and water are examples of resourcesA. nonrenewableC. fossil fuelsB. buddingD. renewable17. Which cycle illustrates the path of water through the environment?A Nitrogen cycleC. Carbon cycleB. Phosphorus cycleD. Hydrologic cycle18. What is a resource that can be replaced relatively quickly by naturalprocesses?A. nonrenewableC. depleted resourcesB. material resourcesD.renewable resource19. Environmental Scientists study interactions between_A. animals and their environment.B. humans and their environments.C. humans and animals.D. animals and their habitats20. Which of the following is the most abundant element in a Star?A. HeliumC. SulphurB. CarbonD. Hydrogen21. Which of the following is described as a cloud of gas and dust?A. Proto starC. Black HoleB. NebulaD. Red Giant22. What will be the next fate of a red giant after it explodes?A. It will become a planetary nebula.B. It will become a Black Hole.C. It will go back as a proto star.D. It will remain the same.23. What do you call to the explosion of a red supergiant star?A Black HoleC. SupernovaB. Planetary NebulaD. White dwarf24. This stage of a star exerts such a string gravitational pull that no lightescapes called as alanA Neutron StarC. Black DwarfB. ProtostarD. Black Hole25. It is the earliest stage of a star's life.A. Neutron StarC. Black DwarfB. ProtostarD. Black Hole