You are presented with the question "What kind of effect does a squirrel have on the ecosystem?" and the following answer choices: - Negative - Positive - adding heat - growth - food - Destructive - Powerful - support Now knowing that planting trees has a positive impact on an ecosystem and thus one important job the squirrel does in the ecosystem is to plant trees, choose the best answer.
Positive
(Question)
You are presented with the question "What are proteins the building blocks of?" and the following answer choices: - Plants growth - athletes - cell walls - cytoplasm - humans - organisms - health - atoms Now knowing that cells are the microscopic building blocks of organisms and proteins are the building blocks of living cells, choose the best answer.
(Answer)
organisms
Ques: You are presented with the question "Mitosis begins when what unite in fertilization? " and the following answer choices: - seeds - gonads - alleles - plants - cells - gametes - zygotes - Flowers Now knowing that gametes then unite in fertilization and form a diploid zygote and mitosis produces diploid cells, choose the best answer.
Ans: gametes
(Q).
You are presented with the question "What do echinoderms employ to grip surfaces?" and the following answer choices: - adhesives - resistance - Hemoglobin - properties - forces - direct energy - abrasion - layers of fat Now knowing that echinoderms use pheromones to communicate with each other and echinoderms and molluscs use adhesives to grip the substrate during locomotion, choose the best answer.
(A).
adhesives
Ques:You are presented with the question "what adults are barrel-shaped?" and the following answer choices: - offspring - fertile - barnacles - Length - insects - sea squirts - humans - beer Now knowing that adult tunicates are barrel-shaped and tunicates, or sea squirts, are marine organisms covered with a gelatinous tunic, choose the best answer.

Ans:sea squirts
Ques: You are presented with the question "a greenhouse is used to protect plants by doing what?" and the following answer choices: - reduced heat - colder and wetter - storing lawnmowers - holding plant pots - retaining heat - In the winter - food and shelter - starting fires Now knowing that agreenhouse is used to protect plants by keeping them warm and retains heat in cold weather, reflects exterior heat in warm weather, choose the best answer.
Ans:
retaining heat