Ques: Flowers produce spores that develop into gametophytes, and because ferns lack flowers and seeds, they reproduce through spores. Given these facts, what do ferns reproduce with among the following options: - pollen - heat - a cuticle - sunlight - alleles - spores - chemicals - bushes
Ans: spores

Ques: Muscle contraction occurs when muscle fibers get shorter, and muscles in the upper arm called biceps are used to flex the arm. Given these facts, what gets contracted when fibers get shorter among the following options: - nerves - h2o - veins - firm hugs - fur - biceps - the skin - density
Ans: biceps

Ques: Avalley is formed by a river flowing, and canyon formed as a consequence of river erosion. Given these facts, a valley is formed by among the following options: - Sediment - a solute - calcite - seismic activity - glaciation - weathering - erosion - loose soil
Ans: erosion

Ques: Mammals have a layer of fat under the skin to help insulate the body, and insulation is very important in a cold climate like Arkhangelsk. Given these facts, what aspect of mammals is especially important in cold climates among the following options: - layer of body fat under skin - lips - sweat glands - To conserve energy - toes - food and shelter - It helps them survive - by keeping them warm
Ans:
layer of body fat under skin