Day 61

As nocturnal animals, opossums are most active at night. Which graph accurately shows the use of glucose, a food moleculeused in respiration, by an opossum’s muscle cells over a two-day period? A or B?

Nocturnal animals are animals that are more active at night.

What process is shown by the letter X in the diagram?

a. evaporationb. condensationc. precipitation

Day 62In an ecosystem, energy from the sun is converted and transferred to all membersof the biotic community.At which level of organization is solar energy converted by photosynthesis?a. cellsb. organismsc. populations

When did the bacteria reach the carrying capacity of its environment?

a. 0 hoursb. 10 hoursc. 20 hours

Day 63

What type of organism is primarily responsible for recycling matter from mountain lions’ bodies back to the soil?a. herbivoresb. omnivoresc. decomposers

All elements in an ecosystem can be classified as biotic or abiotic. Which statement uses the term “biotic” or “abiotic” correctly?

a. Biotic factors in a river include flow rate and water depth.b. Abiotic factors in a grassland include cattle grazing and predation.c. Abiotic factors in a corn field include rainfall and soil temperature.

Day 64

1. Which level has the smallest number of organisms?

2. Which level has the largest number of organisms?

3. Which level receives the highest percentage of energy from the sun?

4. Suppose there are 10,000 units of energy available at the lowest level. How much energy would be at the top level?

Day 65

Identify the biotic and abiotic components in the diagram.

Hint: biotic abioticbio means lifea- means “not”

Identify the type of ecosystem in the diagram below. a. aquaticb. terrestial

Day 66

Which would be used to measure the length of oak leaves?

Which would be used to compare the mass of the two boxes above?

Day 67

Which of these tools wouldbe most appropriate to use whenmeasuring the width of eachgrowth ring in a tree trunk? A balanceB rulerC stopwatchD thermometer

Which unit would be best toexpress the mass of the asteroid?A mgB gC cgD kg

Day 68

Which would most likely bemeasured in milliliters?

A amount of rainfall in a month B length of time of a rainstormC temperature of rainD mass of a raindrop

Sandy grows roses along her walkway. The roses close to the street had more blooms than the roses close to the house. Which statement is a hypothesis Sandy could make about her roses? a. There were many bloom on the roses near the

house and fewer blooms on the roses closest to the street.

b. The roses closest to the street had more blooms because they received more sunlight.

c. The Roses near the house were taller but had fewer blooms.

Day 69

Which of these is used to measure mass?

What is the length of this tadpole? a. 2.8cmb. 3.1cmc. 3.5cm

Day 70

Bright and colorful markings can be warnings to other organisms to stay away. Which of these fish is likely to be most dangerous to its predators? Which of the seeds above is most likely to

be carried by an animal? a. mapleb. milkweedc. dandeliond. cocklebur