You are presented with the question "What kind of animals conserve energy with their hair or fur?" and the following answer choices:  - fur  - bears  - mammals  - sweating  - frogs  - cactus  - goats  - humans  Now knowing that mammals conserve body heat with their hair or fur and basically, heat is energy, choose the best answer.
mammals


You are presented with the question "When does steel expand?" and the following answer choices:  - matter vibrating  - when it loses heat  - It gets heated up  - flow of electrons  - when it transfers heat away  - recovery time from fatigue  - when it conducts heat  - when it cools down  Now knowing that when metal conducts heat , that metal expands and steel is a solution of metals, choose the best answer.
when it conducts heat


Q: You are presented with the question "What can be used for survival in the desert?" and the following answer choices:  - nutrients  - shade  - food and shelter  - salt and water.  - heat  - picnics  - Conserving water  - Chemical energy  Now knowing that conserving water can be used for survival in a dry environment and deserts are usually very, very dry, choose the best answer.
A: Conserving water


Question: You are presented with the question "What are needed to build cells?" and the following answer choices:  - hormones  - food  - RNA  - isotopes  - fats  - clorophyll  - DNA  - p53  Now knowing that protein is used to repair cells by the human body and dNA makes proteins, proteins build cells, and cells make up people, choose the best answer.
Answer: DNA


*Question*
You are presented with the question "what has a positive impact on an animal 's ability to be a carrier for life?" and the following answer choices:  - four limbs  - staying frosty  - staying isolated  - prolactin release  - staying warm  - staying mad  - coded genes  - organic molecules  Now knowing that staying warm has a positive impact on an animal 's survival and animals that survive develop an immunity, but are also carriers for life, choose the best answer.
**Answer**
staying warm


(Q).
You are presented with the question "Plants are multicellular eukaryotes with cell walls composed primarily of what?" and the following answer choices:  - protein  - plants  - leaves  - chemicals  - Energy.  - lignin  - eukaryotes  - Energy  Now knowing that plants are multicellular eukaryotes with cell walls made of cellulose and plant cell walls are composed primarily of lignin and cellulose, choose the best answer.
(A).

lignin