Which of the following characteristics below belong to a clam?

A) dimorphic

B radula

C) closed circulatory system

D) shell teeth

E) pen

F) A and B only

G) A and C only

H) B and C only

I) B and D only

J) C and E only

K) B, C, and D

L) C, D, and E

A population of 100 butterflies living on an acre of land loses three-quarters of its members when a sudden freeze in the spring occurs just after they emerge as caterpillars. This population has undergone a reduction in population size due to A.

Which factor has led to climate change? 1. global wind patterns 2. ocean currents 3. greenhouse gases 4. uneven Earth's surface

Suppose that ear length in rabbits is controlled by two additive genes, each of which has two alleles. A true-breeding female (aabb) with 6-cm ears is mated to a true-breeding male (AABB) with 16-cm ears. Predict the ear length of the F1 generation.

What is considered the brain cells of the immune system?

Is a surcrose a enzyme

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Unlike fossil fuels, biomass fuels

Which of these products is formed during the metabolic reactions of cellular respiration

8. Agent that kills microorganisms, rather than inhibits it:

What nutrients are required in higher amounts during pregnancy due to their roles in the synthesis of red blood cells?