April 21, 2015

Homework Help: Enviro Science

Posted by mysterychicken on Wednesday, April 25, 2012 at 6:20pm.

28. Good experiments have 2 key characteristics; they are
a. an experimental group and a confirmed hypothesis
b. analysis of the control group and an accurate prediction of the outcome
c. conducting the actual experiment and reporting the results
d. testing a single variable and using a control
No idea..

32. The 2 primary types of ocean currents are
a. wind and global currents
b. warm and cold water currents
c. ocean floor and gulf currents
d. surface and deep currents

38. 2 threats to ocean ecosystems are
a. nutrient runoff and industrial waste discharges
b. overfishing and entanglement of marine mammals in trawl nets
c. sewage and algal blooms
d. all of the above
Not sure..

39. What is the difference between an endangered species and a threatened species?
a. An endangered species has very low numbers while a threatened species' population is in decline
b. An endangered and a threatened species' population are both so low that they face extinction
c. An endangered species no longer exists and threatened species are on the verge of extinction
d. none of the above

47. The composition of the atmosphere include gases, solid particles, and atmospheric dust. -True


Answer this Question

First Name:
School Subject:

Related Questions

Enviro Science - 23. Which of the following does NOT describe an effect of the ...
Psychology - Using the format of an experimental write-up*, describe (and ...
statistics - suppost we wanted to test the hypothesis that control a group of ...
psychology - In an experiment, a control group is different from an experimental...
Bio - 1. A control group differs from an experimental group: A. in the number of...
Statistic - 18. Twenty students randomly assigned to an experimental group ...
sattistics - Twenty students randomly assigned to an experimental group receive ...
Can someone help with this? - A psychologist is performing an experiment ...
Psychology - A psychologist is performing an experiment involving a controlled ...
Psychology - Twenty students randomly assigned to an experimental group receive ...