A blastula is

a. a digestive organ

b. the innermost germ layer

c. a layer of embryological tissue

d. a hollow ball of cells in an embryo

Which of the following is NOT a basic type of soil? a) forest soil b) desert soil c) waterbed soil d) grassland soil

5. Which of the following is not an advantage of conserving water? a. Ensuring that we have enough clean water in the future b. Keeping the costs of water down c. Making sure that areas experiencing water scarcity have better access to freshwater d.

Populations of organisms that have sigmoid growth curves limited by the carrying capacity are called

Jane's parents are both left-handed. what is the chance that she will be left-handed as well

Replication of dna is said to be semiconservative because each separated strand serves as a template to make an exact copy. the whole dna molecule serves as a template for making new dna. dna makes mrna, which in turn codes for the formation of trna.

In the United States, mothers who live in poverty generally have babies with lower birthweight than those who do not live in poverty. The mean birthweight for babies born in the U. S. to mothers living in poverty is approximately 2800 grams.

Hypothesis on whether radiation has the same impact on coastal, forest, and desert areas

In a family is affected by a genetic disorder the son in the family has the same diseasebut the daughters do not have it

The "sphere" that includes all of the water in, on, or around the Earth is the A. biosphere. B. exosphere. C. geosphere. D. cryosphere. E. atmosphere. F. hydrosphere.

What is the arrangement of phospholipids in the plasma membrane