Insulated material can be used for keeping warm, and hair is a natural insulator whether the it is warm or cool. Given these facts, what can keep you warm among the following options: - toenails - warmth - skin - nails - wings - fingers - fur - hair
hair

(Question)
Most invertebrates have a nervous system, and insects are the most common invertebrates. Given these facts, most insects have a what among the following options: - a cuticle - storing system - city system - epidermis and dermis - nervous system - building system - four limbs - layers of fat
(Answer)
nervous system

Ques: Burning fossil fuels increases the carbon in the atmosphere, and more carbon in the atmosphere means atmospheric warming. Given these facts, what causes global warming among the following options: - Oceans rising - Deforestation - Greenhouse gasses - Burning fossil fuels - Greenhouse gases - Movement of an air mass - Leaving lights on - tectonic plates coliding
Ans: Burning fossil fuels

(Q).
Conserving water can be used for survival in a dry environment, and deserts are usually very, very dry. Given these facts, where can conserving water be used for survival in among the following options: - our planet - oceans - rivers - deserts - watershed - clouds - Mountains - soils
(A).
deserts

Ques:Recycling reduces the resources needed to make something, and reuse is the best form of recycling. Given these facts, how can we reduce resources in making products among the following options: - it needs them - lowered energy cost - Throw them away - Destroy them - Burn them - Reusing products - Time and energy - Electrical energy

Ans:Reusing products

Ques:When water freezes , that water expands, and water density is determined by temperature. Given these facts, what property of a substance changes when it is frozen among the following options: - motility - molecular make-up - molecules - elements contained - Weight - energy - size - density

Ans:
density