Which of the following is typical of the gestational stage?

The choices are;

a. the appearance of the first permanent teeth

b. the appearance of the last permanent teeth

c. rapid development

d. puberty

 

The answer is c. rapid development.  Gestational stage is the time period that a pregnancy needs to exist from conception to natural birth time. In humans, 40 weeks. Gestation is the carrying of an embryo or fetus exclusive viviparous animals. It is typical for mammals. 

The answer would be plant growth.

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.