“Titration is a common lab method in chemical analysis. It is the slow addition of one solution of a known concentration (called a titrant) to a
known volume of another solution of unknown concentration until the
reaction reaches neutralization, which is often indicated by a color
change." No heat source is involved. Given the information above, which
safety precaution should be observed when titrating NaOH into a beaker?
NaOH is a solution that is caustic (able to burn or corrode organic tissue).
Skin contact should be avoided.
A. Wear protective eyewear.
B. Wear heat-protective gloves.
C. Avoid open flames
D. Only work in lab groups of 3 or 4.

This is due ! matching pairs of chromosomes from parents are called a. homologous chromosomes b. heterozygous chromosomes c. herterogenes d. homologous bands

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?