Why do we celebrate Earth Day? Need an answer today.

In which part of the river would you expect to find high oxygen levels, low nutrient levels and low biodiversity levels? A. 3rd to 5th order streams B. 1st and 2nd order streams C. High order streams and rivers D. near the headwaters or source

In a laboratory experiment the time it takes a marble to fall from a table to the floor is recorded with a stopwatch. The results are 0.38 seconds, 0.37 seconds and 0.39 seconds respectively.

In which zone is the ocean temperature most affected by the weather? A) the deep zone B) the surface zone C) the abyssal zone D) the transition zone

By 1952, many scientist were convenced that genes are made of dna, but they did not yet know how dna worked. why was it important to determine the structure of dna to understand how dna stored, copies, and trabsmitted information

Describe how energy flows through a hypothetical food chain from the bottom to the top. What happens to the numbers of individuals in each level as you move up the chain?

An organism with two different alleles for a single trait is

How do symbiotic bacteria act as a barrier to pathogenic bacteria

some technologies have a number of negative effects which is a negative outcome of the technology of vertical farming

The amount of protein generally consumed daily by strength athletes is:

Name of substrate of amylase