Which of the following animals is an ectotherm?

Which are nursery grounds for shrimp and

many invertebrates and fish? a. photic zones b. benthic zones c. estuaries d. pelagic zones e. limnetic areas

Oysters have a Type-II survivorship curve

____________________ Indicate whether the statement is true or false.

The stone tools and the dentition of Homo habilis indicate that early humans were

A. strictly carnivores. B. omnivores that could either scavenge or hunt for meat. C. strictly scavengers. D. strictly herbivores.

The law of segregation states that:

a) the number of chromosomes in a cell is always divisible by 2. b) Eggs and sperm separate before fertilization occurs. c) gametes cannot be separate and equal. d) each of two alleles for a given trait segregate into different gametes. e) an allele on one chromosome will always segregate from an allele on a different chromosome.