In 2001, bacillus anthracis endospores were sent in letters to various locations in the united states. the recipients of the letters inhaled the spores and were infected with this pathogen; five people died as a result. which of the following statements are true about bacterial endospores? select all that apply.
a-endospores can survive extreme heat, lack of water, radiation, and exposure to many toxic chemicals.
b-both gram-positive and gram-negative organisms form true endospores.
c-endospores are highly durable dehydrated cells with thick cell walls.
d-endospores have a limited lifespan.
e-endospores are reproductive structures.

It's going to be:

A-Endospores can survive extreme heat, lack of water, radiation, and exposure to many toxic chemicals.

C-Endospores are highly durable dehydrated cells with thick cell walls.

ANSWER IS A and C

b - the respond is innate and varies over time.

good luck!

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.