You are presented with the question "Where are roundworms useful in an ecosystem?" and the following answer choices: - killing animals - soils - fields - bacteria - eating plants - wetland - food - alveoli Now knowing that roundworms make up the phylum Nematoda and also, nematoda and rotifera are important groups contributing to soils, choose the best answer.
soils
(Question)
You are presented with the question "What do cigarettes cause?" and the following answer choices: - circulatory systems - a lot of human deaths - increased health of lungs - increased stamina in life - Something that causes allergies - guaranteed longer life - harmful substances - direct damage to the lungs Now knowing that smoking causes direct damage to the lungs and smoking Cigarettes smoking is habit-forming, choose the best answer.
(Answer)
direct damage to the lungs
Ques: You are presented with the question "In order to survive, animals require what?" and the following answer choices: - food and shelter - light energy - securing a loan - cashing their checks - Organic compounds - hydration of their cells - eating their enemies - Chemical energy Now knowing that animals require water for survival and water hydrates the cells, choose the best answer.
Ans: hydration of their cells
(Q).
You are presented with the question "_ are aerobic" and the following answer choices: - goats - plants - algae - moss - cells - chloroplast - complex - humans Now knowing that cells cannot survive without oxygen and bacteria that require oxygen are aerobic, choose the best answer.
(A).
cells
Ques:You are presented with the question "what does a hemisphere need to be tilted away from the receive less sunlight?" and the following answer choices: - h2o - heat energy - equator - Energy. - clouds - our star - an object - energy Now knowing that when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight and similarly, stars are referred to as suns, but our star is the Sun, choose the best answer.

Ans:our star
Question: You are presented with the question "What happens when cell walls relax?" and the following answer choices: - evaporation - permineralization - preventing heat transfer - allow growth - it keeps an organism warm - air cools - Cell walls expand - heat produced Now knowing that dilation occurs when cell walls relax and blood flow is improved by vitamin E and it causes blood vessels to dilate or expand, choose the best answer.
Answer:
Cell walls expand